June 18, 2026
Ancient Quasar Discovered: Flickering Light from the Dawn of Time, Mars' Life-Hunting Mission
Sponsor Link: This episode of SpaceTime is brought to you by Incogni, your first stop in reclaiming your online privacy.To check out our special offer for SpaceTime listeners, visit https://www.incogni.com/stuartgary SpaceTime Series 29 Episode 73...
Sponsor Link:
This episode of SpaceTime is brought to you by Incogni, your first stop in reclaiming your online privacy.To check out our special offer for SpaceTime listeners, visit www.incogni.com/stuartgary
SpaceTime Series 29 Episode 73 The earliest known flickering quasar Astronomers have discovered the earliest known flickering quasar dating back to a time when the universe was just 850 million years old. ExoMars to target vast clay beds in search for life on Mars The European Space Agency has selected a vast clay bed called Oxia Planum as the best place on the red planet to search for signs of life. Understanding neutron star mergers Scientists have used deep learning neural networks to better understand the violent events associated with the merger of neutron stars. The Science Report New GLP-3 drugs significantly improve blood sugar levels and lead to substantial weight loss. Ocean waves generated in the Southern Ocean tracked all the way to the shores of Alaska. Are dogs left or right handed? Skeptics guide to fish oil supplements. Our Guests This Week: Kovi Rose from the University of Sydney And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ If you’d like to support the podcast and gain access to bonus content by becoming a SpaceTime crew member, you can do just that through The Big Bang editions on Patreon, Spotify and Apple Podcasts. Details on the Support page on our website https://www.bitesz.com/show/spacetime/support/ For more SpaceTime and show links: https://linktr.ee/biteszHQ
This episode of SpaceTime is brought to you by Incogni, your first stop in reclaiming your online privacy.To check out our special offer for SpaceTime listeners, visit www.incogni.com/stuartgary
SpaceTime Series 29 Episode 73 The earliest known flickering quasar Astronomers have discovered the earliest known flickering quasar dating back to a time when the universe was just 850 million years old. ExoMars to target vast clay beds in search for life on Mars The European Space Agency has selected a vast clay bed called Oxia Planum as the best place on the red planet to search for signs of life. Understanding neutron star mergers Scientists have used deep learning neural networks to better understand the violent events associated with the merger of neutron stars. The Science Report New GLP-3 drugs significantly improve blood sugar levels and lead to substantial weight loss. Ocean waves generated in the Southern Ocean tracked all the way to the shores of Alaska. Are dogs left or right handed? Skeptics guide to fish oil supplements. Our Guests This Week: Kovi Rose from the University of Sydney And our regular guests: Alex Zaharov-Reutt from techadvice.life Tim Mendham from Australian Skeptics 🌏 Get Our Exclusive NordVPN deal here ➼ www.bitesz.com/nordvpn . The discounts and bonuses are incredible! And it’s risk-free with Nord’s 30-day money-back guarantee! ✌ If you’d like to support the podcast and gain access to bonus content by becoming a SpaceTime crew member, you can do just that through The Big Bang editions on Patreon, Spotify and Apple Podcasts. Details on the Support page on our website https://www.bitesz.com/show/spacetime/support/ For more SpaceTime and show links: https://linktr.ee/biteszHQ
The Astronomy, Space, Technology & Science News Podcast.
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This is Spacetime Series twenty nine, episode seventy three, for
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broadcast on the nineteenth of June twenty twenty six. Coming
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up on Space Time, the earliest known flickering quasa, Europe's
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Exo Mars to target a vast clay bed and it
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searched for life on the Red planet, and understanding neutron
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star mergers. All that and more coming up on space Time.
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Welcome to Space Time with Stuart Gary.
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Astronomers have discovered the earliest known flickering quasa, dating back
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to a time when the universe was just eight hundred
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and fifty million years old. Their findings were reported in
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the journal Nature. Astronomy Show this voracious super massive black
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hole was already surprisingly mature up. The massive black hole
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lies at the heart of every galaxy, including our own
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Milky Way. As a black hole feeds, it pulls material
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into an accretion disk, a whirlpool of high temperature gas
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and dust. As this material piles up and falls under
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the black hole, it lights up, radiating huge amounts of energy,
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and the most energetic super massive black holes are known
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as quasars. They can be some of the most active
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and luminous objects in the universe clearly visible from across
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the other side of the cosmos. The pattern of light
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coming from a quasa can give astronomers clues about how
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super massive black holes shape the.
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Galaxies around them.
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Now, astronomers have detected a quaser flickering in the early universe.
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One of the sturdies.
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Authors Gene Leung from the Kavali Institute for Astrophysics and
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Space Research, says, although there have been lots of quasars
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fan of the cosmic dawn, this is the first time
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astronomers have actually seen one flickering, and that's important because
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the quasars flicker a loudly on colleagues to determine that. Surprisingly,
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this ancient quasars whirlpool of gas and dust resembled a
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flat pancake, similar in shape to that of more modern
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day quasars. The findings add to a long standing mystery
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in cosmology, why does super massive black holes exist so
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early in the universe's history. Physicists have always assumed that
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a flat accretion disc reflects a relatively mature black hole,
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one that's already calm and stable. On the other hand,
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black holes that are just starting to form, like those
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often seen in the early universe should be more unsettled
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systems with accretion discs that appear to be more fluffy
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and chaotic.
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So the flat.
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Accretion disc around this very early quasa heightens the mystery
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of how super massive black holes can grow and mature
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in relatively short amounts of cosmic time. It suggests that
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all the messy, very rapid growth phases that astronomers expect
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all black holes to go through at some point must
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happen very early on in their evolution, long before they're
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seen as bright luminous quasars. A super massive black hole
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can be billions of times more massive than the Sun.
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These gravitational giants are the central engines of most galaxies,
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helping to regulate the galaxy staff formation and growth. Without
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super massive black holes, no galaxy would look the way
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it does today now. It was long assumed that it
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should take more than a billion years for the first
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galaxies to settle the mature, so scientists didn't expect to
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see supermassive black holes in the very early universe, but
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observations since the early two thousands have shown otherwise. In fact,
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scientists have now spotted well over two hundred supermassive black
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holes in the universe's first billion years of existence. These
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objects were detected because of their extremely active quasars, giving
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off enormous blasts of radiation that could be seen on
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Earth some thirteen billion light years away. These earliest quasars
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were observed as pinpricks of light, singing the existence of
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a supermassive black hole in very ancient times. But from
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these bright and distant darts, scientists aren't able to tell
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much more about the black holes or their cosmic dawn environments.
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To do that, they need to catch a quasars flicker.
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Owen says people have known the quasars in the nearby
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universe can flicker. The flickering comes from fluctuations in the
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way the gas is being fed into the black hole,
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and how aquasar flickers tells astronomers about the structure of
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the black hole accretion disk and the rate at which
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it's consuming material. But the further back in space and
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time the object is, the more distorted its light appears.
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This effect is due to the expansion of the universe,
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which effectively stretches or red shifts light to redder, longer wavelengths,
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and the same stretching also occurs in time. Any flicker
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that naturally occurs over several weeks, for instance, would appear
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stretched out flickering only every few months when seen from
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billions of light years away. So despite a flickering quaser
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from the cosmic dawn, the authors needed to observe the
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distant universe at redder wavelengths and specifically within the infrared
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spectrum and over long time scale of many years. The
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winning colleagues ultimately found a flicker in a quasa in
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data collected by NASA's Near Earth Object Wide Filled Infrared
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Survey Explorer NEOWISE mission, a space based infrared telescope that
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scanned the entire sky over a total of fourteen years.
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Based on the reprocessed data, the author's unearthed a signal
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from eight hundred and fifty million years after the Big Bang,
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which they've now confirmed as the earliest known flickering quasar.
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The wind says the observed quasar flickering randomly over a
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fourteen year period, much like a candle flame flickers without
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a fixed pattern. They estimate the quasers as bright as
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twelve trillion suns and it's flickering by about twenty percent
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that means it's fluctuating up and down by a brightness
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of about two trillion suns.
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The authors also attract.
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How the quasar's light flickered over several different wavelengths. The
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wavelength of light reflects a certain temperature of material that's
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being emitted in the light. The closer the material is
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to the black hole, the harder it is, so astronomers
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can use the wavelengths of light to map the shape
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and structure of the material within the accretion disc as
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goes around the black hole. The authors analyze the quasars
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flicker that determine the shape of the accretion discs surrounding
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the central super massive black hole, finding it to be
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surprisingly thin and flat, structuring that astronomers mostly only see
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around nee By Alder black holes, ones that have had
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a lot of time to settle down and mature. So
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this provides direct evidence that the same feeding process and
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structures observed in the nearby universe were already in place
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at very early times, despite very different cosmic environments. It
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means that something must have happened even earlier in the
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universe's history that led to these systems looking so mature.
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This is space time still to come. The European Space
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Agency selects a vast clay bed known as the Oxyoplanum
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as the best place on the Red planet to search
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for signs of life, and scientists have used deep learning
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neural networks to better understand the violent events associated with
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the merger of tron stars.
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All that and more still to calm on space time.
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The European Space Agency has selected a vast clay bed
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called Oxyoplanum as the best place on the Red planet
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to go searching for signs of life. A new study
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reported in the journal Icarus has determined this area, which
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is thought to have once been covered by a vast ocean,
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have massive clay deposits that extend far beyond previous estimates.
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Clay minerals require liquid water to form, and they hold
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clues from a time when the Red planet was a warmer,
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wetter world, far more hospitable to the formation of life.
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The new findings point to the presence of large amounts
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of water shaping in the region, possibly across the entire planet.
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The six worled Exo Mars rover will investigate weather these
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clay rich sediments have traces of past life in them,
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and it will also learn more about the water environment
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in which these clays were formed. As Oxyoplanum lies in
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an open basin, it's possible that the clay deposits there
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were shaped by an extensive body of water reaching several
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kilometers in depth some four billion years ago. Mind you,
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another scenario could simply be that large amounts of water
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flooded vast planes from ancient groundwater reserves. The study found
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that the clay deposits at the proposed landing site stretch
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for as much as three hundred kilometers in any direction.
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EXO Mars project scientist George Vargo says the missional target
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the oldest deposits in the sequence, and that makes the
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potential implications for geology in early climate on Mars very
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relevant for the mission search for life see. Understanding the
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nature and origin of these clay minerals will be essential
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for reconstructing the planet's climate and assessing habitability. Oxyoplanum's clays
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formed first about four billion years ago, predating those of
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other locations the claypan. To reach their conclusions, the authors
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use the Omega instrument on the European Space Agency's Mars
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Express orbitter and the CHRISM instrument on NASA's Mars Reconnaissance orbiter.
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This allowed them to examine the mineralogy and reconstruct the
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rock layering between oxyoplane and animal distant location called Marworth Valleys.
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Their analysis revealed that both sites have similar mineral layers.
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At the boundary between the two main clay bearing units,
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the authors identified a paleo surface, a remnant of an
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ancient exposed surface that was heavily cratered and latter covered
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by younger deposits. This paleo surface marks the pause in
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sedimentation followed by a shift in water chemistry and mineralogy
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across birth science. These results aligned with studies suggesting intimittly
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wet climate in the early Martian environment. Guided by this finding,
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the rover will try and confirm the orbiter's results from
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the surface. The Exo Mars rover has a unique squid
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of instruments for carrying out its mission. These include camera spectrometers,
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a ground penetrating radar, and an analytical laboratory designed to
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investigate the landscape's theological context and examined samples collected by
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a drill able to reach some two meters below the
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Martians surface. And that's important because any evidence of past
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or present life on Mars on on neither surface would
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have been irradiated away and destroyed long ago, but deep
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down below a protective layer of regulars, that evidence may
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still survive. In fact, it may be our best chance
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yet of finding out if life ever existed on the
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Red planet.
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This report from East.
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TV has life ever existed on Mars? And could life
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have survived and evolved for billions of years? In their
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insatiable quest to find life in other parts of a universe,
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humans have often looked at the Red planet. After all,
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Mars is a rocket planet like Earth, orbiting the Sun
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and at a distance where water could have been present
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in the past. We are unlikely to find Martians on Mars,
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but tiny traces of ancient rivers, lakes, or even oceans
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could give us fresh clues about whether some sort of
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life could have developed. Finding this fresh clues is exactly
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what the Exomos mission is all about. It aims at
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sunning a rover to the red planet to explore and
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retrieve samples from its soil. After many years of testing
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and fine tuning, the rover was due to be launch
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into space in twenty twenty two, but events on Earth
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thwarted these plants.
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The war in Ukraine had a massive impact on our worker.
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Pietro is the EXOMAS rover manager for EISA. He's come
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to obviously some tests in Terin where the rover and
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its Earth twin are housed.
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We were ready to go to the launch campaign for
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EXOMAS and we had all of a sudden to stop
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and to recon our plans.
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So I suppose it's been quite tough for the teams
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as well.
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Yes, for the team has been very, very difficult to
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digest this decision because they've been working very hard in
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the last years and it was it was indeed difficult
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also from a human perspective, but of course they understand
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that the political implications. So they managed to let's say,
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a reset and to start working on a new enterprise,
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which is the EXO Master and frankly mission.
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So what our new plants really.
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For The new plans are to build a new lender,
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this time an European lender. The previous one was built
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also with the help of European industry, but was mainly
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Russian made. This time we will be building it completely
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in Europe, with some contribution from NASA. That we might
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need for the propassion system.
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So we'll have a new European lenser. We'll have a
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refurbished rover. What's the timeline? When are we and we
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hope that the rover will be launched.
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We are now targeting a new launch opportunity in October
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twenty twenty eight. Cannot be earlier because we need time
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to build, to redesign, and build and requalify the lender.
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So there is a certain time that is needed for that.
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We don't go.
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We don't want to go beyond this date because then
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the environmental conditions on Mars are not favorable for the
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mission that we want.
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To do with the rover.
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Despite these turbulent times, preparatory activities for a trip to
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Mars never really stopped and tests are picking up again.
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In this building here that the home of Amalia, the
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Earth to win of a real rover. Amalia lives by
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the Mars Yards, a large hangar filled with one hundred
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and forty tons of soil that simulates the conditions the
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rover will encounter on Mars. Amalia is a replica of
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a real rover. It enables engineers to rehearse various scenario
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that the real rover might encounter in harsh Martian environment,
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helping them to make key decisions. Last year we came
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to this very same spot to film some peculiar moves
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called wheel walking, a unique locomotion system enabling the rover
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to overcome difficult terrains. But this year it's a drilling
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