Solar Flare Frenzy: Earth’s Brush with the Biggest Geomagnetic Storm in 20 Years
This episode of SpaceTime explores the recent surge in solar activity, including the largest solar flare of the year and the most intense geomagnetic storm in two decades. Massive Solar Flare and Its Implications
We delve into the details of a powerful X 2.7 class solar flare that erupted from a newly active sunspot region, AR14087. Although the flare was not initially directed towards Earth, its rotation has now positioned it directly in our path. We discuss the mechanics of solar flares, their classification, and the potential impacts of such events on our planet, including disruptions to communication systems, satellite operations, and even power grids. The Gannon Storm: A Historic Geomagnetic Event
The episode highlights the Gannon Storm, a severe geomagnetic storm that struck Earth on May 10, 2024. Coinciding with a space weather exercise, this event caused significant disruptions, including high voltage power line failures and rerouted flights due to radiation exposure. We analyze its effects on the atmosphere, satellites, and even the ionosphere, revealing insights into how such storms can impact modern technology. Ancient Solar Storms and Their Modern Implications
In a fascinating segment, we discuss a groundbreaking study that identifies the strongest solar storm ever recorded, dating back to 12350 BCE. This ancient event, significantly more intense than any modern storm, provides invaluable data for understanding solar activity and its potential risks to contemporary infrastructure. Science Robert: Long Work Hours and Brain Changes
We also touch on a new study revealing how long working hours could alter brain structures, potentially affecting memory and emotional regulation.Join us as we unpack these cosmic phenomena and their implications for life on Earth and beyond.
www.spacetimewithstuartgary.com (
https://www.spacetimewithstuartgary.com/)
✍️ Episode References
Journal of Occupational Environmental Medicine
https://journals.lww.com/joem/Pages/default.aspx
(
https://journals.lww.com/joem/Pages/default.aspx)
Become a supporter of this podcast:
https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support
(
https://www.spreaker.com/podcast/spacetime-space-astronomy--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss)
.
00:00 Solar flares are powerful blasts of energy erupting from sunspots
10:30 May 2024 was the biggest geomagnetic storm in over 20 years
14:29 New study reveals strongest solar event ever recorded, rewriting science on space weather
18:23 A new study claims people who work long hours could have altered brain structures
Episode link: https://play.headliner.app/episode/27236573?utm_source=youtube
00:00 - Solar flares are powerful blasts of energy erupting from sunspots
10:30 - May 2024 was the biggest geomagnetic storm in over 20 years
14:29 - New study reveals strongest solar event ever recorded, rewriting science on space weather
18:23 - A new study claims people who work long hours could have altered brain structures
Kind: captions
Language: en
00:00:00.240 --> 00:00:03.429
This is Spaceime Series 28 episode 61
00:00:03.439 --> 00:00:06.110
for broadcast on the 21st of May
00:00:06.120 --> 00:00:09.589
2025. Coming up on Spaceime, the biggest
00:00:09.599 --> 00:00:11.910
solar flare this year, the biggest
00:00:11.920 --> 00:00:14.789
geomagnetic storm in the past 20 years,
00:00:14.799 --> 00:00:17.189
and the most extreme solar storm known
00:00:17.199 --> 00:00:19.750
to have hit the Earth. All that and more
00:00:19.760 --> 00:00:23.269
coming up on Spaceime.
00:00:23.279 --> 00:00:27.310
Welcome to Spaceime with Stuart Garry.
00:00:27.320 --> 00:00:34.180
[Music]
00:00:42.559 --> 00:00:44.310
Well, we've just experienced the largest
00:00:44.320 --> 00:00:46.389
solar flare so far this year, producing
00:00:46.399 --> 00:00:49.910
an X2.7 class event. The massive
00:00:49.920 --> 00:00:51.910
eruption emanated from a newly appeared
00:00:51.920 --> 00:00:53.830
active sunspot region cataloged as
00:00:53.840 --> 00:00:56.310
AR14087.
00:00:56.320 --> 00:00:58.229
It's one of two X-class flares and
00:00:58.239 --> 00:01:00.310
several smaller M-class events all
00:01:00.320 --> 00:01:02.549
coming from the same region. Now,
00:01:02.559 --> 00:01:04.469
luckily, they weren't pointed directly
00:01:04.479 --> 00:01:06.550
towards the Earth, leaving the planet on
00:01:06.560 --> 00:01:08.789
the outer edge of the strike zone. But,
00:01:08.799 --> 00:01:10.710
of course, that's now changed as this
00:01:10.720 --> 00:01:12.789
active region has now rotated to
00:01:12.799 --> 00:01:15.350
directly face the Earth. The event
00:01:15.360 --> 00:01:17.429
happened as the sun reaches solar
00:01:17.439 --> 00:01:20.149
maximum, the climax of its 11-year solar
00:01:20.159 --> 00:01:22.950
cycle. Solar flares are powerful blasts
00:01:22.960 --> 00:01:25.350
of energy erupting from sunspots on the
00:01:25.360 --> 00:01:28.149
sun's surface. Sunspots are slightly
00:01:28.159 --> 00:01:30.070
cooler regions on the sun's surface, the
00:01:30.080 --> 00:01:31.990
photosphere caused by magnetic field
00:01:32.000 --> 00:01:34.390
lines from deep inside the sun, breaking
00:01:34.400 --> 00:01:36.510
through the surface and looping out into
00:01:36.520 --> 00:01:39.190
space. Now, because the sun is fluid
00:01:39.200 --> 00:01:41.510
rather than solid, different latitudes
00:01:41.520 --> 00:01:43.429
rotate at different rates, and this
00:01:43.439 --> 00:01:45.590
causes the magnetic field lines to twist
00:01:45.600 --> 00:01:48.550
and snap. When they reconnect, a process
00:01:48.560 --> 00:01:50.069
called magnetic reconnection, it
00:01:50.079 --> 00:01:51.910
triggers pathful explosions near the
00:01:51.920 --> 00:01:54.710
surface known as solar flares. Solar
00:01:54.720 --> 00:01:56.630
flares are classified according to their
00:01:56.640 --> 00:01:59.350
strength. The smallest ones are B-class,
00:01:59.360 --> 00:02:01.749
that's followed by C, then M, and the
00:02:01.759 --> 00:02:04.550
largest AXclass flares. It's similar to
00:02:04.560 --> 00:02:06.550
the RTER scale used for earthquakes,
00:02:06.560 --> 00:02:08.550
with each letter representing a 10-fold
00:02:08.560 --> 00:02:11.350
logarithmic increase in energy output.
00:02:11.360 --> 00:02:13.910
So, an X-class flare is 10 times as
00:02:13.920 --> 00:02:16.150
strong as an M-class flare and 100 times
00:02:16.160 --> 00:02:18.630
as strong as a C-class flare. Within
00:02:18.640 --> 00:02:20.790
each letter class, there's a finer scale
00:02:20.800 --> 00:02:24.070
from 1 to 9. C-class flares are too weak
00:02:24.080 --> 00:02:26.070
to noticeably affect the Earth. But
00:02:26.080 --> 00:02:28.470
M-class flares can cause brief radio
00:02:28.480 --> 00:02:30.229
blackouts at the poles and minor
00:02:30.239 --> 00:02:32.470
radiation storms that could endanger
00:02:32.480 --> 00:02:35.430
people in space. Although X is the last
00:02:35.440 --> 00:02:37.110
letter, these flares can have more than
00:02:37.120 --> 00:02:39.830
10 times the power of an X1 class, so
00:02:39.840 --> 00:02:43.110
they can go much higher than an X9. The
00:02:43.120 --> 00:02:45.030
most powerful flare on record was back
00:02:45.040 --> 00:02:48.229
in 2003 during the last solar maximum.
00:02:48.239 --> 00:02:49.750
In fact, it was so powerful it
00:02:49.760 --> 00:02:51.670
overloaded the sensors measuring it.
00:02:51.680 --> 00:02:54.309
They cut out at X17, and the flare was
00:02:54.319 --> 00:02:57.509
later estimated to be about an X45.
00:02:57.519 --> 00:02:59.670
A powerful X-class flare like that can
00:02:59.680 --> 00:03:01.830
create long lasting radiation storms
00:03:01.840 --> 00:03:03.350
which can harm and even destroy
00:03:03.360 --> 00:03:05.350
satellites, give airline passengers
00:03:05.360 --> 00:03:07.750
flying near the poles dose of radiation
00:03:07.760 --> 00:03:09.750
scramble communication and navigation
00:03:09.760 --> 00:03:12.470
systems and even overload power grids
00:03:12.480 --> 00:03:14.309
causing widespread blackouts on the
00:03:14.319 --> 00:03:16.869
ground. The most powerful solar flares
00:03:16.879 --> 00:03:19.270
can trigger chronal mass ejections, huge
00:03:19.280 --> 00:03:21.509
blasts of the sun's material, including
00:03:21.519 --> 00:03:23.589
protons, electrons, magnetic field, and
00:03:23.599 --> 00:03:26.470
helium nuclei. Now, our current solar
00:03:26.480 --> 00:03:29.270
cycle number 25 began back in December
00:03:29.280 --> 00:03:32.149
2019 and so should be reaching solar max
00:03:32.159 --> 00:03:35.110
around now. This is when the sun reaches
00:03:35.120 --> 00:03:37.350
its most violent phase with lots of
00:03:37.360 --> 00:03:39.670
sunspot activity and consequently lots
00:03:39.680 --> 00:03:41.550
of solar flares and coronal mass
00:03:41.560 --> 00:03:43.910
ejections. A number of sunspots are
00:03:43.920 --> 00:03:46.149
predicted to reach a peak of around 115
00:03:46.159 --> 00:03:48.550
by July this year, making the current
00:03:48.560 --> 00:03:50.869
solar cycle weaker than average and only
00:03:50.879 --> 00:03:52.470
slightly more active than the previous
00:03:52.480 --> 00:03:54.789
solar cycle 24.
00:03:54.799 --> 00:03:56.470
During each of these roughly 11 year
00:03:56.480 --> 00:03:58.789
solar cycles, the sun's magnetic field
00:03:58.799 --> 00:04:01.030
flips in polarity. North pole becomes
00:04:01.040 --> 00:04:03.350
south and south pole north. And this
00:04:03.360 --> 00:04:05.830
flip occurs when the solar cycle reaches
00:04:05.840 --> 00:04:07.830
solar minimum with the next flip
00:04:07.840 --> 00:04:09.789
probably occurring around
00:04:09.799 --> 00:04:13.830
2030. This is spacetime. Still to come,
00:04:13.840 --> 00:04:15.830
the biggest geomagnetic storm in 20
00:04:15.840 --> 00:04:18.229
years and the most extreme solar storm
00:04:18.239 --> 00:04:20.310
ever known to have hit the earth. All
00:04:20.320 --> 00:04:24.920
that and more still to come on
00:04:24.930 --> 00:04:38.030
[Music]
00:04:38.040 --> 00:04:40.710
Spaceime. While spectacular, the most
00:04:40.720 --> 00:04:42.629
recent geomagnetic storm events we've
00:04:42.639 --> 00:04:44.710
seen pale into insignificance when
00:04:44.720 --> 00:04:46.390
compared to the solar storm that hit the
00:04:46.400 --> 00:04:48.310
Earth just a year ago, which has now
00:04:48.320 --> 00:04:50.390
officially been listed as the biggest in
00:04:50.400 --> 00:04:51.390
20
00:04:51.400 --> 00:04:54.629
years. Amazingly, that event coincided
00:04:54.639 --> 00:04:56.390
with the inaugural space weather
00:04:56.400 --> 00:04:59.030
tabletop exercise. The exercise was
00:04:59.040 --> 00:05:00.469
meant to be a training event where
00:05:00.479 --> 00:05:02.310
experts could work through realtime
00:05:02.320 --> 00:05:04.550
ramifications of a major geomagnetic
00:05:04.560 --> 00:05:06.550
storm, a global disruption to Earth's
00:05:06.560 --> 00:05:08.790
magnetic field. Now, as we mentioned
00:05:08.800 --> 00:05:10.950
earlier, geomagnetic storms can decimate
00:05:10.960 --> 00:05:12.950
satellites, overload electrical power
00:05:12.960 --> 00:05:14.870
grids, and expose astronauts to
00:05:14.880 --> 00:05:17.189
dangerous levels of radiation. So,
00:05:17.199 --> 00:05:19.510
minimizing the impact of such storms
00:05:19.520 --> 00:05:21.830
requires close coordination. And so,
00:05:21.840 --> 00:05:23.590
this meeting was a chance for scientists
00:05:23.600 --> 00:05:26.950
to practice. But then their simulation
00:05:26.960 --> 00:05:29.110
turned into reality. The director of
00:05:29.120 --> 00:05:30.950
NASA's space weather program, Jamie
00:05:30.960 --> 00:05:32.870
Favorvers, says the plan was to run
00:05:32.880 --> 00:05:35.189
through a hypothetical scenario, finding
00:05:35.199 --> 00:05:37.029
where existing processes worked and
00:05:37.039 --> 00:05:39.189
where they needed improving. But then
00:05:39.199 --> 00:05:40.710
this hypothetical scenario was
00:05:40.720 --> 00:05:43.830
interrupted by the real thing. On May
00:05:43.840 --> 00:05:47.350
the 10th, 2024, the first G5 or severe
00:05:47.360 --> 00:05:48.950
geomagnetic storm in more than two
00:05:48.960 --> 00:05:51.670
decades hit planet Earth. The event
00:05:51.680 --> 00:05:53.749
named the Ganon storm in memory of the
00:05:53.759 --> 00:05:55.590
leading space weather physicist Jennifer
00:05:55.600 --> 00:05:57.670
Ganon didn't cause any catastrophic
00:05:57.680 --> 00:06:00.469
damages. But a year on key insights into
00:06:00.479 --> 00:06:02.469
the Ganon storm are helping scientists
00:06:02.479 --> 00:06:03.990
understand and prepare for future
00:06:04.000 --> 00:06:06.870
geomagnetic events. The Ganon storm had
00:06:06.880 --> 00:06:09.510
effects both on and off our planet. On
00:06:09.520 --> 00:06:11.189
the ground, some high voltage power
00:06:11.199 --> 00:06:13.590
lines tripped, transformers overheated,
00:06:13.600 --> 00:06:15.990
and GPS guided tractors veered off
00:06:16.000 --> 00:06:17.909
course in the Midwest United States,
00:06:17.919 --> 00:06:19.990
further disrupting spring planting that
00:06:20.000 --> 00:06:22.390
had already been delayed by heavy rains.
00:06:22.400 --> 00:06:24.390
In the air, the threat of high radiation
00:06:24.400 --> 00:06:26.550
exposure as well as communications and
00:06:26.560 --> 00:06:28.390
navigation losses forced numerous
00:06:28.400 --> 00:06:30.469
transatlantic and trans-pacific flights
00:06:30.479 --> 00:06:32.870
to change course. During the storm,
00:06:32.880 --> 00:06:34.870
Earth's upper atmospheric layer, the
00:06:34.880 --> 00:06:37.070
thermosphere, heated to unusually high
00:06:37.080 --> 00:06:39.830
temperatures. In fact, at 60 km in
00:06:39.840 --> 00:06:41.189
altitude. The temperature, which
00:06:41.199 --> 00:06:44.150
typically peaks at around 650° C,
00:06:44.160 --> 00:06:46.749
surpassed over
00:06:46.759 --> 00:06:49.830
1,150°. NASA's global scale observations
00:06:49.840 --> 00:06:51.830
of the Lemon Disc or Gold Mission
00:06:51.840 --> 00:06:53.749
observed the atmosphere expanding from
00:06:53.759 --> 00:06:55.990
the heat generated to create a strong
00:06:56.000 --> 00:06:57.670
wind that lofted heavy nitrogen
00:06:57.680 --> 00:07:00.469
particles much higher into space. Now,
00:07:00.479 --> 00:07:02.309
in orbit, the expanded atmosphere
00:07:02.319 --> 00:07:04.070
increased drag on thousands of
00:07:04.080 --> 00:07:07.589
satellites. NASA's ISAT 2 lost altitude
00:07:07.599 --> 00:07:09.670
and wound up entering safe mode, while
00:07:09.680 --> 00:07:11.830
NASA's Colorado inner radiationbuilt
00:07:11.840 --> 00:07:14.670
experiment Cubat was forced to de-orbit
00:07:14.680 --> 00:07:16.870
prematurely. Other spacecraft such as
00:07:16.880 --> 00:07:18.790
the European Space Agency Sentinel
00:07:18.800 --> 00:07:20.790
mission required more power to maintain
00:07:20.800 --> 00:07:22.469
their orbital altitude, and they were
00:07:22.479 --> 00:07:23.990
forced to perform maneuvers to avoid
00:07:24.000 --> 00:07:26.469
collisions with space debris. The storm
00:07:26.479 --> 00:07:28.230
also dramatically changed the structure
00:07:28.240 --> 00:07:30.790
of the Earth's ionosphere. A dense zone
00:07:30.800 --> 00:07:32.469
of the ionosphere that normally covers
00:07:32.479 --> 00:07:34.390
the equator at night dipped downwards
00:07:34.400 --> 00:07:36.629
towards the south pole, forming a sort
00:07:36.639 --> 00:07:38.390
of check mark shape and causing a
00:07:38.400 --> 00:07:40.629
temporary gap near the equator. The
00:07:40.639 --> 00:07:42.430
Ganon storm also rocked Earth's
00:07:42.440 --> 00:07:44.390
magnetosphere, magnetic bubble that
00:07:44.400 --> 00:07:46.790
surrounds the planet. Data from NASA
00:07:46.800 --> 00:07:49.510
missions MMS and thermos Artemus saw
00:07:49.520 --> 00:07:51.510
giant curling waves of particles and
00:07:51.520 --> 00:07:53.749
rolled up magnetic fields along the edge
00:07:53.759 --> 00:07:56.150
of the coronal mass ejections. And these
00:07:56.160 --> 00:07:57.830
waves were perfectly sized to
00:07:57.840 --> 00:07:59.909
periodically dump extra magnetic energy
00:07:59.919 --> 00:08:01.909
and mass into the magnetosphere upon
00:08:01.919 --> 00:08:03.830
impact. In the process, creating the
00:08:03.840 --> 00:08:05.350
largest electrical current seen in the
00:08:05.360 --> 00:08:08.150
magnetosphere in 20 years. Incoming
00:08:08.160 --> 00:08:10.230
energy and particles from the sun also
00:08:10.240 --> 00:08:12.150
created two new temporary belts of
00:08:12.160 --> 00:08:13.869
energetic particles within the
00:08:13.879 --> 00:08:15.909
magnetosphere. These belts formed
00:08:15.919 --> 00:08:17.990
between the existing Van Allen radiation
00:08:18.000 --> 00:08:19.670
belts which permanently surround the
00:08:19.680 --> 00:08:22.230
Earth. The storm also ignited auroral
00:08:22.240 --> 00:08:24.150
activity around the globe, including at
00:08:24.160 --> 00:08:25.830
lower latitudes, where these celestial
00:08:25.840 --> 00:08:27.830
light shows are rare. NASA's
00:08:27.840 --> 00:08:29.830
aurorasaurus project was flooded with
00:08:29.840 --> 00:08:31.990
more than 6,000 observer reports from
00:08:32.000 --> 00:08:34.430
over 55 countries on all seven
00:08:34.440 --> 00:08:36.389
continents. Photographers helped
00:08:36.399 --> 00:08:38.070
scientists better understand why the
00:08:38.080 --> 00:08:40.310
aurora observed throughout Japan were
00:08:40.320 --> 00:08:42.550
magenta rather than the typical read in
00:08:42.560 --> 00:08:44.790
color. Researchers studied hundreds of
00:08:44.800 --> 00:08:46.870
photos and found that the auroray was
00:08:46.880 --> 00:08:49.590
surprisingly high, around 1,000 km above
00:08:49.600 --> 00:08:52.389
the ground. That's around 320 km higher
00:08:52.399 --> 00:08:55.190
than red auroray typically appear. In a
00:08:55.200 --> 00:08:56.389
paper published in the journal
00:08:56.399 --> 00:08:58.310
Scientific Reports, the authors found
00:08:58.320 --> 00:09:00.710
the peculiar color of the auroray likely
00:09:00.720 --> 00:09:02.550
resulted from a mix of red and blue
00:09:02.560 --> 00:09:04.870
aurora produced by oxygen and nitrogen
00:09:04.880 --> 00:09:06.710
molecules lofted higher than usual as
00:09:06.720 --> 00:09:09.030
the Ganon storm heated and expanded the
00:09:09.040 --> 00:09:11.430
upper atmosphere. And impacts of the
00:09:11.440 --> 00:09:13.590
sun's amped up solar activity didn't end
00:09:13.600 --> 00:09:16.230
in Earth's space. The solar region that
00:09:16.240 --> 00:09:18.070
sparked the Gaton storm eventually
00:09:18.080 --> 00:09:19.829
rotated away from our planet and
00:09:19.839 --> 00:09:21.670
redirected its outburst towards the
00:09:21.680 --> 00:09:24.470
planet Mars. As energetic particles from
00:09:24.480 --> 00:09:26.389
the sun struck the Martian atmosphere,
00:09:26.399 --> 00:09:28.630
NASA's Maven Orbiter watched the aurora
00:09:28.640 --> 00:09:30.870
engulf the red planet from May the 14th
00:09:30.880 --> 00:09:33.509
through to the 20th and solar particles
00:09:33.519 --> 00:09:35.509
overwhelmed the star camera on NASA's
00:09:35.519 --> 00:09:37.590
Mars Odyssey orbiter, causing the camera
00:09:37.600 --> 00:09:39.670
to cut out for almost an hour.
00:09:39.680 --> 00:09:41.590
Meanwhile, down on the Martian surface,
00:09:41.600 --> 00:09:43.350
images from the navigation cameras on
00:09:43.360 --> 00:09:45.430
NASA's Curiosity rover were freckled
00:09:45.440 --> 00:09:47.829
with snow, streaks, and specks caused by
00:09:47.839 --> 00:09:50.150
the charged particles. Curiosity's
00:09:50.160 --> 00:09:52.070
radiation assessment detector recorded
00:09:52.080 --> 00:09:53.990
the biggest surge of radiation since the
00:09:54.000 --> 00:09:56.310
rover landed on the red planet Mars Gale
00:09:56.320 --> 00:09:59.670
Crater back in 2012. Now, had astronauts
00:09:59.680 --> 00:10:01.110
been there, they would have received a
00:10:01.120 --> 00:10:04.150
radiation dose of around 8,100 micro
00:10:04.160 --> 00:10:06.310
grays. That's equivalent to some 30
00:10:06.320 --> 00:10:09.269
chest X-rays. The Ganon storm spread
00:10:09.279 --> 00:10:11.829
Aurora to unusually low latitudes. In
00:10:11.839 --> 00:10:13.110
fact, it's been called the best
00:10:13.120 --> 00:10:15.670
documented geomagnetic storm in history.
00:10:15.680 --> 00:10:17.190
And the data captured during this
00:10:17.200 --> 00:10:18.949
historic event will continue to be
00:10:18.959 --> 00:10:21.110
analyzed for years to come, revealing
00:10:21.120 --> 00:10:22.630
new lessons about the nature of
00:10:22.640 --> 00:10:24.949
geomagnetic storms and how best to
00:10:24.959 --> 00:10:30.389
weather them. This report from NASA TV.
00:10:30.399 --> 00:10:34.310
In May 2024, a spectacular multicolored
00:10:34.320 --> 00:10:36.949
light show flooded the skies across the
00:10:36.959 --> 00:10:39.630
world. These displays are known as the
00:10:39.640 --> 00:10:42.069
auroras. They're usually seen near the
00:10:42.079 --> 00:10:44.630
polar regions, but that May, sky
00:10:44.640 --> 00:10:46.949
watchers spotted the glowing lights far
00:10:46.959 --> 00:10:48.110
from Earth's
00:10:48.120 --> 00:10:50.710
poles. People were witnessing the
00:10:50.720 --> 00:10:53.550
biggest geomagnetic storm in over 20
00:10:53.560 --> 00:10:56.710
years. This storm was so intense. It was
00:10:56.720 --> 00:10:58.949
the most intense in two decades. This
00:10:58.959 --> 00:11:00.710
was one of those large events that we've
00:11:00.720 --> 00:11:03.670
been talking about for years. It all
00:11:03.680 --> 00:11:05.670
began from this active region on the
00:11:05.680 --> 00:11:08.389
sun. Active regions are known for having
00:11:08.399 --> 00:11:10.949
intense magnetic fields and the more
00:11:10.959 --> 00:11:13.110
tangled those fields become, the more
00:11:13.120 --> 00:11:16.949
likely they are to erupt. We watched the
00:11:16.959 --> 00:11:19.750
active region evolve and we thought that
00:11:19.760 --> 00:11:21.430
this might be something to watch and
00:11:21.440 --> 00:11:24.230
might be something active. Eventually,
00:11:24.240 --> 00:11:26.470
the active region unleashed a chain of
00:11:26.480 --> 00:11:29.310
huge solar eruptions directly towards
00:11:29.320 --> 00:11:33.030
us. What made it so strong was the fact
00:11:33.040 --> 00:11:35.430
that there was so much energy put off by
00:11:35.440 --> 00:11:37.910
the sun. It was really great conditions
00:11:37.920 --> 00:11:40.949
for the perfect storm. On May 10th, the
00:11:40.959 --> 00:11:43.509
eruptions reached Earth, triggering a
00:11:43.519 --> 00:11:45.509
global disruption to Earth's magnetic
00:11:45.519 --> 00:11:49.430
field, known as a geomagnetic storm. It
00:11:49.440 --> 00:11:52.710
was rated a G5, the rarest and strongest
00:11:52.720 --> 00:11:55.670
type. The powerful storm pushed auroras
00:11:55.680 --> 00:11:58.550
to appear in unusual places like Arizona
00:11:58.560 --> 00:12:01.310
in the United States and Perth in
00:12:01.320 --> 00:12:04.150
Australia. That energy interacted with
00:12:04.160 --> 00:12:06.310
the Earth and created the aurora and
00:12:06.320 --> 00:12:08.710
caused all sorts of disturbances that we
00:12:08.720 --> 00:12:10.949
felt here on the ground. The storm
00:12:10.959 --> 00:12:13.509
caused some high voltage lines to trip
00:12:13.519 --> 00:12:15.750
and transformers to overheat.
00:12:15.760 --> 00:12:18.470
transatlantic flights rerouted due to
00:12:18.480 --> 00:12:21.190
risks of high radiation exposure and
00:12:21.200 --> 00:12:23.150
communication and navigation
00:12:23.160 --> 00:12:25.750
disruptions. Further up, NASA saw
00:12:25.760 --> 00:12:28.069
Earth's upper atmosphere get unusually
00:12:28.079 --> 00:12:31.350
hot. The temperature 100 m up in the
00:12:31.360 --> 00:12:33.870
thermosphere usually peaks at
00:12:33.880 --> 00:12:37.509
1,200° F, but during the storm, it
00:12:37.519 --> 00:12:38.590
reached
00:12:38.600 --> 00:12:42.069
2,100° F. The heating caused the
00:12:42.079 --> 00:12:45.069
atmosphere to expand which affected
00:12:45.079 --> 00:12:47.590
satellites. There were thousands of
00:12:47.600 --> 00:12:49.829
satellites that had to move their orbits
00:12:49.839 --> 00:12:52.550
because the storm was coming through.
00:12:52.560 --> 00:12:55.350
The storm also affected the space beyond
00:12:55.360 --> 00:12:57.990
Earth. It created two new temporary
00:12:58.000 --> 00:13:00.590
belts of energetic particles around our
00:13:00.600 --> 00:13:03.190
planet, adding to Earth's two permanent
00:13:03.200 --> 00:13:06.069
ones, which are known as the Van Allen
00:13:06.079 --> 00:13:08.710
radiation belts. The particles in these
00:13:08.720 --> 00:13:11.030
belts can harm orbiting satellites and
00:13:11.040 --> 00:13:13.750
astronauts heading for deep space. So
00:13:13.760 --> 00:13:16.949
NASA studies them closely. As the sun
00:13:16.959 --> 00:13:19.350
rotated, the active region eventually
00:13:19.360 --> 00:13:21.990
moved away from Earth and redirected its
00:13:22.000 --> 00:13:25.430
outbursts towards Mars. On Mars, NASA's
00:13:25.440 --> 00:13:27.990
Curiosity rover saw solar particles from
00:13:28.000 --> 00:13:31.030
the storm. The rover also recorded the
00:13:31.040 --> 00:13:33.269
biggest surge of radiation since it
00:13:33.279 --> 00:13:36.310
landed in 2012. If an astronaut had been
00:13:36.320 --> 00:13:38.310
on the Martian surface, they would have
00:13:38.320 --> 00:13:40.629
received a radiation dose equivalent to
00:13:40.639 --> 00:13:43.150
30 chess X-rays at
00:13:43.160 --> 00:13:45.829
once. With spacecraft throughout the
00:13:45.839 --> 00:13:48.150
solar system and modern cameras in so
00:13:48.160 --> 00:13:50.470
many people's pockets, the storm was the
00:13:50.480 --> 00:13:53.590
most well doumented in history. There's
00:13:53.600 --> 00:13:56.310
lots of data. We're able to actually use
00:13:56.320 --> 00:13:58.230
that data to understand things and
00:13:58.240 --> 00:14:00.069
predict more and more how this is going
00:14:00.079 --> 00:14:02.550
to affect our Earth. Although the storm
00:14:02.560 --> 00:14:05.030
passed within days, NASA will continue
00:14:05.040 --> 00:14:07.430
to learn from the observations for years
00:14:07.440 --> 00:14:09.910
to come, helping us better prepare for
00:14:09.920 --> 00:14:11.910
the next big storm. And in that report
00:14:11.920 --> 00:14:13.990
from NASA TV, we heard from NASA
00:14:14.000 --> 00:14:17.470
helopysicist Kelly Cor. This is
00:14:17.480 --> 00:14:19.910
spaceime. Still to come, the most
00:14:19.920 --> 00:14:21.990
extreme solar storm ever known to have
00:14:22.000 --> 00:14:23.829
hit the Earth. And later in the science
00:14:23.839 --> 00:14:26.069
report, a new study claims people who
00:14:26.079 --> 00:14:28.710
work long hours could have altered brain
00:14:28.720 --> 00:14:31.189
structures. All that and more still to
00:14:31.199 --> 00:14:35.100
come on
00:14:35.110 --> 00:14:41.940
[Music]
00:14:47.639 --> 00:14:50.069
Spaceime. New researchers uncovered the
00:14:50.079 --> 00:14:52.470
strongest solar event ever recorded in
00:14:52.480 --> 00:14:54.230
the process rewriting science's
00:14:54.240 --> 00:14:56.230
understanding of space weather and
00:14:56.240 --> 00:14:59.030
radiocarbon dating. This new finding
00:14:59.040 --> 00:15:00.949
expands the timeline and intensity of
00:15:00.959 --> 00:15:03.030
known solar activity and sets a new
00:15:03.040 --> 00:15:05.069
upper boundary for such solar
00:15:05.079 --> 00:15:07.189
phenomenon. The study's authors
00:15:07.199 --> 00:15:09.030
discovered an extreme spike in
00:15:09.040 --> 00:15:11.870
radiocarbon corresponding to the
00:15:11.880 --> 00:15:15.110
12,350 BCE during the dusk of the last
00:15:15.120 --> 00:15:18.389
ice age. The study by Celia Gulabeko and
00:15:18.399 --> 00:15:20.629
Ilia Uzoskin from the University of Ulo
00:15:20.639 --> 00:15:22.470
in Finland utilized their newly
00:15:22.480 --> 00:15:24.230
developed chemistry climate model which
00:15:24.240 --> 00:15:25.990
was specifically designed to reconstruct
00:15:26.000 --> 00:15:27.990
solar particle storms under ancient
00:15:28.000 --> 00:15:30.629
global climatic conditions. The model
00:15:30.639 --> 00:15:32.629
confirmed that the detected solar event
00:15:32.639 --> 00:15:35.269
was approximately 18% stronger than the
00:15:35.279 --> 00:15:38.389
notorious year 775 event which until now
00:15:38.399 --> 00:15:40.470
had been the strongest solar storm ever
00:15:40.480 --> 00:15:43.670
recorded using tree ring archives. Leeno
00:15:43.680 --> 00:15:45.430
says that compared to the largest event
00:15:45.440 --> 00:15:47.030
in the modern satellite era, which is
00:15:47.040 --> 00:15:50.110
the 2005 particle storm, the ancient
00:15:50.120 --> 00:15:53.430
12,350 B.CE event was more than 500
00:15:53.440 --> 00:15:56.150
times more intense. Other large known
00:15:56.160 --> 00:15:57.990
solar particle events occurred around
00:15:58.000 --> 00:16:04.030
the years 994, 663 B.CE, 5259 B.CE, and
00:16:04.040 --> 00:16:07.030
7176 B.CE. And a few other candidates
00:16:07.040 --> 00:16:09.350
are still being investigated. The new
00:16:09.360 --> 00:16:11.350
model was verified using wood samples
00:16:11.360 --> 00:16:13.509
recently found in the French Alps dating
00:16:13.519 --> 00:16:17.430
back some 4,300 years. Solar particle
00:16:17.440 --> 00:16:19.590
storms are rare, but when they occur,
00:16:19.600 --> 00:16:21.829
they bombard the earth with an enormous
00:16:21.839 --> 00:16:24.389
amount of high energy particles. In
00:16:24.399 --> 00:16:26.550
comparison, the famous Carrington solar
00:16:26.560 --> 00:16:29.509
storm of 1859 was a different kind of
00:16:29.519 --> 00:16:31.590
event and not accompanied by a solar
00:16:31.600 --> 00:16:33.749
particle storm. Gulabeno says the
00:16:33.759 --> 00:16:37.110
ancient event in 12,350 B.CE CE is the
00:16:37.120 --> 00:16:39.189
only known extreme solar particle event
00:16:39.199 --> 00:16:41.509
outside the holene epoch which is the
00:16:41.519 --> 00:16:43.790
past 12,000 years of stable warm
00:16:43.800 --> 00:16:46.150
climate. With this model, the authors
00:16:46.160 --> 00:16:47.670
were able to assess the strength,
00:16:47.680 --> 00:16:49.590
timing, and terrestrial effects of what
00:16:49.600 --> 00:16:51.350
is now the most powerful and extreme
00:16:51.360 --> 00:16:54.230
solar particle event ever known. Solar
00:16:54.240 --> 00:16:56.230
particle storms can greatly enhance the
00:16:56.240 --> 00:16:58.550
normal production of cosmogenic isotopes
00:16:58.560 --> 00:17:00.629
like radiocarbon 14 in the atmosphere,
00:17:00.639 --> 00:17:02.470
which are produced by galactic cosmic
00:17:02.480 --> 00:17:05.510
rays. Such enhanced production preserved
00:17:05.520 --> 00:17:07.909
in annual tree rings serves as a clear
00:17:07.919 --> 00:17:10.230
cosmic timestamp, making possible
00:17:10.240 --> 00:17:13.350
absolute dating of tree samples. These
00:17:13.360 --> 00:17:15.590
dramatic spikes, known as Miyaki events
00:17:15.600 --> 00:17:17.270
after the Japanese researcher first
00:17:17.280 --> 00:17:19.270
discovered them, offer invaluable data
00:17:19.280 --> 00:17:21.029
for scientists studying both solar
00:17:21.039 --> 00:17:23.029
activity, ancient Earth systems, and
00:17:23.039 --> 00:17:25.829
space climate. Miyaki events allow
00:17:25.839 --> 00:17:27.990
scientists to pin out exact calendar
00:17:28.000 --> 00:17:29.669
years in floating archaeological
00:17:29.679 --> 00:17:32.549
chronologies. Radiocarbon signals from
00:17:32.559 --> 00:17:34.230
such events have already enabled
00:17:34.240 --> 00:17:36.310
researchers to precisely date Viking
00:17:36.320 --> 00:17:37.669
settlements in New Foundland and
00:17:37.679 --> 00:17:40.150
Neolithic communities in Greece. The
00:17:40.160 --> 00:17:41.909
findings are revising science's
00:17:41.919 --> 00:17:44.230
understanding of solar physics and space
00:17:44.240 --> 00:17:46.310
weather extremes. And this event
00:17:46.320 --> 00:17:49.190
establishes a new worst case scenario.
00:17:49.200 --> 00:17:51.350
Understanding its scale is critical for
00:17:51.360 --> 00:17:53.270
evaluating the risks posed by future
00:17:53.280 --> 00:17:55.270
solar storms to modern infrastructure
00:17:55.280 --> 00:17:57.350
such as satellites, power grids, and
00:17:57.360 --> 00:18:00.230
communication and navigation systems.
00:18:00.240 --> 00:18:01.600
This is space
00:18:01.610 --> 00:18:16.750
[Music]
00:18:16.760 --> 00:18:19.110
time. And time out of tech. Another
00:18:19.120 --> 00:18:20.470
brief look at some of the other stories
00:18:20.480 --> 00:18:22.390
making news in science this week with a
00:18:22.400 --> 00:18:25.190
science report. A new study claims that
00:18:25.200 --> 00:18:27.270
people who work long hours could have
00:18:27.280 --> 00:18:29.909
altered brain structures. A report in
00:18:29.919 --> 00:18:31.110
the Journal of Occupational
00:18:31.120 --> 00:18:32.950
Environmental Medicine looked at brain
00:18:32.960 --> 00:18:35.190
scans of 110 participants who worked
00:18:35.200 --> 00:18:37.830
either 52 or more hours a week or a
00:18:37.840 --> 00:18:40.950
standard 35 to 40hour week. They found
00:18:40.960 --> 00:18:42.710
that when compared with those who work
00:18:42.720 --> 00:18:44.310
standard hours, those who worked
00:18:44.320 --> 00:18:46.470
excessive hours had changes in brain
00:18:46.480 --> 00:18:48.710
regions associated with working memory,
00:18:48.720 --> 00:18:50.470
problem solving, and emotional
00:18:50.480 --> 00:18:52.870
regulation. Now, while this study only
00:18:52.880 --> 00:18:54.950
provides a snapshot, can't be used to
00:18:54.960 --> 00:18:56.630
show cause and effect, authors say
00:18:56.640 --> 00:18:58.470
previous research had linked overwork
00:18:58.480 --> 00:19:00.230
with various health issues, and these
00:19:00.240 --> 00:19:02.070
results can help provide more insights
00:19:02.080 --> 00:19:04.909
into overwork and our
00:19:04.919 --> 00:19:07.830
bodies. Engineers have invented a smart
00:19:07.840 --> 00:19:09.990
sponge-like device that can capture
00:19:10.000 --> 00:19:12.710
water from thin air. A report in the
00:19:12.720 --> 00:19:14.789
journal of cleaner production claims the
00:19:14.799 --> 00:19:16.950
system uses the sun's energy and works
00:19:16.960 --> 00:19:18.710
even in low humidity where other
00:19:18.720 --> 00:19:20.870
technologies such as fog harvesting and
00:19:20.880 --> 00:19:23.350
radiative cooling have struggled. They
00:19:23.360 --> 00:19:25.110
say the water from their device remained
00:19:25.120 --> 00:19:26.549
effective across a broad range of
00:19:26.559 --> 00:19:29.029
humidity levels from 30 to 90% and
00:19:29.039 --> 00:19:34.230
temperature levels between 5 and 55° C.
00:19:34.240 --> 00:19:36.549
A new study claims that a ban on
00:19:36.559 --> 00:19:38.870
smartphones and social media access for
00:19:38.880 --> 00:19:40.870
kids doesn't promote a healthy use of
00:19:40.880 --> 00:19:43.510
technology by children. The findings
00:19:43.520 --> 00:19:45.270
reported in the British Medical Journal
00:19:45.280 --> 00:19:46.870
claims the focus should move to a
00:19:46.880 --> 00:19:48.549
rightsbased approach with age
00:19:48.559 --> 00:19:50.549
appropriate design and education, one
00:19:50.559 --> 00:19:52.150
that protects kids from harm while
00:19:52.160 --> 00:19:53.990
developing the right skills to help them
00:19:54.000 --> 00:19:56.630
participate in a digital society. The
00:19:56.640 --> 00:19:58.549
authors say that blanket restrictions on
00:19:58.559 --> 00:20:00.870
technology like smartphones are a stop
00:20:00.880 --> 00:20:02.950
gap solution that does little to support
00:20:02.960 --> 00:20:05.110
a child's longerterm healthy engagement
00:20:05.120 --> 00:20:08.070
with digital spaces across school, home,
00:20:08.080 --> 00:20:10.190
and other
00:20:10.200 --> 00:20:12.549
occasions. Australian telecommunications
00:20:12.559 --> 00:20:14.630
giant Telstra has begun testing the
00:20:14.640 --> 00:20:16.870
Starlink broadband satellite network for
00:20:16.880 --> 00:20:18.789
remote customers beyond the conventional
00:20:18.799 --> 00:20:21.270
cell phone network. With the details,
00:20:21.280 --> 00:20:23.029
we're joined by technology editor Alex
00:20:23.039 --> 00:20:26.070
Sahara from techadvice.life. life. Yeah.
00:20:26.080 --> 00:20:27.350
Well, they've been testing their
00:20:27.360 --> 00:20:29.990
Starlink capability to send text
00:20:30.000 --> 00:20:31.750
messages to people and they're going to
00:20:31.760 --> 00:20:33.830
launch this in Australia later this
00:20:33.840 --> 00:20:35.830
year. Now, this mirrors what Verizon did
00:20:35.840 --> 00:20:38.310
in the US with their ability to send
00:20:38.320 --> 00:20:40.470
messages via Star Link. This is
00:20:40.480 --> 00:20:42.710
augmented over what Apple launched a
00:20:42.720 --> 00:20:44.870
couple of years ago or the iPhone 14
00:20:44.880 --> 00:20:46.149
which has now been extended to the
00:20:46.159 --> 00:20:48.630
iPhone 13 to send emergency messages via
00:20:48.640 --> 00:20:50.549
SOS and now of course you can send other
00:20:50.559 --> 00:20:52.870
messages and use find my let your
00:20:52.880 --> 00:20:54.149
relatives see where you are. But in
00:20:54.159 --> 00:20:55.350
other parts of the world like Australia
00:20:55.360 --> 00:20:57.029
and New Zealand and phone companies are
00:20:57.039 --> 00:20:59.029
like, "Wow, well, we can send messages
00:20:59.039 --> 00:21:01.270
and hopefully eventually soon also make
00:21:01.280 --> 00:21:03.270
phone calls via satellite networks from
00:21:03.280 --> 00:21:05.430
people are outside of the traditional
00:21:05.440 --> 00:21:07.510
cellular networks." And this is a very
00:21:07.520 --> 00:21:09.909
handy capability. So Telstra has sent
00:21:09.919 --> 00:21:12.470
55,000 text messages in its testing
00:21:12.480 --> 00:21:14.789
phase. And so this is basic testing. You
00:21:14.799 --> 00:21:16.549
don't have to be doing this for
00:21:16.559 --> 00:21:18.789
emergency purposes, but it is for hard
00:21:18.799 --> 00:21:20.710
to reach places where the network
00:21:20.720 --> 00:21:22.789
doesn't exist. You know, this is part of
00:21:22.799 --> 00:21:24.789
the ability for regional Australians
00:21:24.799 --> 00:21:26.070
primarily because they're the ones who
00:21:26.080 --> 00:21:28.549
live outside of the uh traditional 4G
00:21:28.559 --> 00:21:31.110
and 5G mobile network coverage. And they
00:21:31.120 --> 00:21:33.270
did also send 500 plus messages in the
00:21:33.280 --> 00:21:34.950
live trial and they've been also sending
00:21:34.960 --> 00:21:37.110
GPS coordinates and emerges via text
00:21:37.120 --> 00:21:39.750
message. So, this is an awesome update
00:21:39.760 --> 00:21:41.830
to the ability for the world to stay in
00:21:41.840 --> 00:21:44.390
contact wherever you are. and uh the new
00:21:44.400 --> 00:21:46.310
ubiquitous communications that we've
00:21:46.320 --> 00:21:48.070
sort of I guess dreamed of for for years
00:21:48.080 --> 00:21:50.470
ever since we've had satellite calls via
00:21:50.480 --> 00:21:52.710
Aridium and then uh the mobile networks
00:21:52.720 --> 00:21:53.990
that have grown and grown and this is
00:21:54.000 --> 00:21:55.909
the next logical step and given the fact
00:21:55.919 --> 00:21:58.149
that Elon Musk wants to get us all to
00:21:58.159 --> 00:22:00.310
Mars. No doubt at some point soon this
00:22:00.320 --> 00:22:01.990
will be interplanetary as well but for
00:22:02.000 --> 00:22:03.669
the time being we're still firmly
00:22:03.679 --> 00:22:05.270
anchored here on Earth. That's Alex
00:22:05.280 --> 00:22:09.470
Sahara from techadvice.live
00:22:09.480 --> 00:22:22.430
[Music]
00:22:22.440 --> 00:22:25.669
life. And that's the show for now.
00:22:25.679 --> 00:22:27.669
Spacetime is available every Monday,
00:22:27.679 --> 00:22:30.390
Wednesday, and Friday through bites.com,
00:22:30.400 --> 00:22:32.630
Soundcloud, YouTube, your favorite
00:22:32.640 --> 00:22:36.590
podcast download provider, and from
00:22:36.600 --> 00:22:38.310
spaceimewithstartgary.com. Spacetime's
00:22:38.320 --> 00:22:39.830
also broadcast through the National
00:22:39.840 --> 00:22:42.230
Science Foundation on Science Zone Radio
00:22:42.240 --> 00:22:44.789
and on both iHeart Radio and TuneIn
00:22:44.799 --> 00:22:47.110
Radio. And you can help to support our
00:22:47.120 --> 00:22:49.430
show by visiting the Spacetime store for
00:22:49.440 --> 00:22:51.270
a range of promotional merchandising
00:22:51.280 --> 00:22:53.750
goodies, or by becoming a Spacetime
00:22:53.760 --> 00:22:55.909
patron, which gives you access to triple
00:22:55.919 --> 00:22:57.750
episode commercial free versions of the
00:22:57.760 --> 00:22:59.830
show, as well as lots of bonus audio
00:22:59.840 --> 00:23:01.590
content, which doesn't go to wear,
00:23:01.600 --> 00:23:03.750
access to our exclusive Facebook group,
00:23:03.760 --> 00:23:06.990
and other rewards. Just go to
00:23:07.000 --> 00:23:08.549
spaceimewithstartgary.com for full
00:23:08.559 --> 00:23:10.950
details. You've been listening to
00:23:10.960 --> 00:23:13.430
Spacetime with Stewartgary. This has
00:23:13.440 --> 00:23:15.590
been another quality podcast production
00:23:15.600 --> 00:23:18.840
from byes.com.