Dec. 5, 2024

NASA's New Leader, Earth's Resilient History, and Vega C's Comeback: S03E224

NASA's New Leader, Earth's Resilient History, and Vega C's Comeback: S03E224

Astronomy Daily - The Podcast: S03E224
Welcome to Astronomy Daily, your go-to source for the latest in space exploration and cosmic discoveries. I'm your host, Anna, and today we have a stellar lineup of stories that will take you from potential...

Season 3
Astronomy Daily - The Podcast: S03E224
Welcome to Astronomy Daily, your go-to source for the latest in space exploration and cosmic discoveries. I'm your host, Anna, and today we have a stellar lineup of stories that will take you from potential leadership changes at NASA to ancient cosmic collisions and groundbreaking space telescope maintenance.
Highlights:
- NASA Leadership Shakeup: Discover the implications of President-elect Donald Trump's unexpected pick of Jared Isaacman to lead NASA, and explore how this choice could reshape American space exploration.
- Ancient Cosmic Collisions: Uncover the fascinating study revealing Earth's resilience to massive asteroid impacts 35 million years ago, and what it means for modern planetary defense.
- Space Telescope Maintenance Innovations: Learn about the innovative solutions being developed to extend the life of space telescopes like the James Webb and Gaia, potentially saving billions in replacement costs.
- Europe's Vega C Launch: Get the latest on Vega C's return to the launch pad, marking a crucial step in maintaining European space independence.
- James Webb's Cosmic Discoveries: Marvel at the James Webb Space Telescope's observations of the Spiderweb Protocluster, providing new insights into early galaxy formation.
- Solar Activity Challenges: Explore how increased solar activity is impacting satellites, causing unexpected challenges and highlighting the importance of space weather forecasting.
For more cosmic updates, visit our website at astronomydaily.io. Sign up for our free Daily newsletter to stay informed on all things space. Join our community on social media by searching for #AstroDailyPod on Facebook, X, YouTube, Tumblr, and TikTok. Share your thoughts and connect with fellow space enthusiasts.
Thank you for tuning in. This is Anna signing off. Until next time, keep looking up and stay curious about the wonders of our universe.
✍️ Episode References
NASA
[NASA Official Website](https://www.nasa.gov)
Jared Isaacman
[Jared Isaacman on Wikipedia](https://en.wikipedia.org/wiki/Jared_Isaacman)
SpaceX
[SpaceX Official Website](https://www.spacex.com)
Artemis program
[Artemis Program on NASA](https://www.nasa.gov/specials/artemis/)
James Webb Space Telescope
[JWST on NASA](https://www.jwst.nasa.gov)
Vega C rocket
[Vega C on ESA](https://www.esa.int/Enabling_Support/Space_Transportation/Vega_C)
Gaia telescope
[Gaia on ESA](https://www.esa.int/Science_Exploration/Space_Science/Gaia)
Shift4 Payments
[Shift4 Official Website](https://www.shift4.com)
Polaris program
[Polaris Program](https://polarisprogram.com)
European Space Agency
[ESA Official Website](https://www.esa.int)

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WEBVTT

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Today on Astronomy Daily, We've got a packed show covering

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some of the biggest stories in space news, from potential

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leadership changes at NASA that could reshape the future of

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American space exploration to ancient cosmic collisions that rocked our

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planet millions of years ago. We'll also explore fascinating new

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developments in space telescope maintenance, get an update on Europe's

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return to the launch pad with Vegas C, and discover

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what the James Web space telescope has revealed about a

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mysterious cosmic spider web billions of light years away. Plus,

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we'll look at how our Sun's increasing activity is causing

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unexpected challenges for satellites in orbit, and why this could

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be just the beginning of a solar storm season that's

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already exceeding predictions. Let's get started in a significant announcement

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that's sending ripples through the space community. President elect Donald

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Trump has named Jared Isaac Man as his pick to

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lead NASA. This choice marks a notable departure from traditional

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NASA leadership, as Isaac Mann brings a unique blend of

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private sector experience and actual spaceflight expertise to the table.

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Isaac Mann, the forty one year old CEO of Shift

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four Payments, has already made his mark in space history

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as a private astronaut, having completed two missions to orbit

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aboard SpaceX capsules through his Polaris program. What makes this

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selection particularly interesting is Isaac Mann's close business relationship with

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Elon Musk and SpaceX, where he's invested hundreds of millions

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of dollars as a key customer of their private astronaut services.

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If confirmed by the Senate, Isaac Mann would oversee NASA's

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substantial twenty five billion dollars budget. This appointment comes at

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a crucial time for the agency as it continues its

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ambitious Artemis program aimed at returning humans to the Moon,

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a program that heavily relies on SpaceX's Starship vehicle. The

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timing of this announcement is unusually early in the presidential

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transition process, and industry insider's knowe that Musk's influence and

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discussions about Mars exploration may have played a role in

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this early selection. Trump himself recently attended SpaceX's sixth starship

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test launch in Texas, highlighting the growing ties between his

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potential future administration and the commercial space sector. Isaac Man's

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appointment could signal a deeper shift toward commercialization of space activities,

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potentially accelerating NASA's existing strategy of partnering with private companies.

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This approach has already transformed how NASA accesses space, though

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it has raised questions about the future of traditional government

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led programs like the Space Launch System. Looking ahead, isaac

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Man has expressed his vision for expanding space exploration, emphasizing

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potential breakthroughs in manufacturing, biotechnology, and even new energy sources. However,

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he'll face significant challenges, including managing NASA's diverse portfolio of

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scientific missions, some of which have faced recent budget constraints,

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and balancing the agency traditional role with increasing commercial partnerships.

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While we often think of the dinosaur killing asteroid as

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Earth's most famous cosmic impact, our planet has faced other

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massive collisions throughout its history. A fascinating new study has

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revealed that Earth was struck by not one, but two

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enormous asteroids around thirty five million years ago. But here's

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the surprising part. Despite their tremendous size, these impacts left

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remarkably little long term evidence of climate change. The first asteroid,

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estimated to be between five and eight kilometers wide created

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the massive Popagai crater in Siberia, spanning one hundred kilometers.

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Just twenty five thousand years later, a second asteroid measuring

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three to five kilometers struck what is now Chesapeake Bay

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in the United States, leaving a crater between forty and

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eighty five kilometers wide. These aren't minor dens. They represent

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the fourth and fifth largest known impact craters on Earth.

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Scientists studying these ancient impacts made an unexpected discovery when

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examining fossil records from the Gulf of Mexico seafloor. Despite

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the enormous size of these collisions, they found no significant

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evidence of long term climate change in the geological record.

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The Earth essentially shrugged off these cosmic punches, showing remarkable resilience. However,

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we shouldn't underestimate the immediate devastation these impacts would have caused.

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In the short term think decades to centuries. These collisions

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would have created massive shock waves, triggered enormous tsunamis, and

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ignited widespread fires. The impacts would have thrown massive amounts

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of dust into the atmosphere, temporarily blocking out sunlight and

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disrupting life across the planet. This research gives us valuable

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insights into Earth's ability to recover from major astronomical events,

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while also serving as a reminder of the importance of

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modern day asteroid detection and planetary defense programs. After all,

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while our planet may be resilient in the long term,

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the immediate consequences of such impacts would be catastrophic for

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human civilization. Next up today, exciting developments are emerging in

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the field of space telescope maintenance, particularly for observatories stationed

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at the Sun Earth lagrange point L two, about a

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million miles from Earth. Scientists have designed a novel approach

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to extend the operational life of these invaluable instruments, potentially

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saving billions in replacement costs. The James Web Space Telescope

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in GIA, two of our most powerful eyes in space,

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are facing challenges that could limit their lifespans. While Web

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has already suffered some micro meteorite damage to its mirrors,

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GIA is running low on fuel after a decade of

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faithful service. But researchers aren't ready to let these astronomical

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power houses fade away just yet. A particularly innovative solution

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involves a spider like attachment designed to service these telescopes

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without disrupting their delicate operations. This concept could be especially

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crucial for Web, which still has many years of potential

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observations ahead. The challenge lies not just in reaching these

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distant observatories, but in servicing them without causing damage. One

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of the trickiest aspects of this maintenance mission is the

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approach phase. Traditional breaking methods using thrusters could be catastrophic.

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Imagine pointing what amounts to a blowtorch at these sensitive instruments.

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To address this, researchers have developed new trajectory techniques that

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combine dynamical systems theory with optimal control theory, creating efficient

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and safe paths to reach these distant telescopes. The research

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team has already completed plans for refueling Gaya, while additional

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engineering work continues for Web servicing missions. These developments represent

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a significant shift in how we think about space telescope longevity,

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moving from disposable instruments to serviceable ones that could potentially

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operate for decades with proper maintenance. Europe's Vagacy rocket is

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poised to make its highly anticipated return to service, marking

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a crucial moment for Europe in space independence. The thirty

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five meter rocket has been fully assembled at Europe's spaceport,

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with its payload, the Sentinel one C satellite, now securely

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mounted at the top of the stack. As ESA's compact

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launcher specialized in delivering payloads to polar orbits, Vega C

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works alongside the recently debuted Ariani six to ensure Europe

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maintains its sovereign access to space. This upcoming mission is

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particularly significant as it represents vegac's return after a two

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year hiatus and will be the twenty fifth flight of

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the Vega rocket family. The rocket's assembly is a marvel

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of engineering efficiency, featuring four distinct stages at its base,

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the P one hundred twenty C first stage stands as

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one of the world's most powerful, single piece solid fuel

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rocket motors. This component is shared with Ariani six's boosters,

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creating a cost effective synergy between the two launch systems.

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The second stage, the Zafiro forty, comes equipped with an

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improved nozzle design and has under gone extensive testing to

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ensure reliability. When launch day arrives, the first three stages

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will propel the rocket skyward in a carefully choreographed sequence

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lasting just eight minutes. The final stage, known as Avon Plus,

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will then take over, performing a series of precise orbital

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maneuvers before delivering Sentinel ONEC to its designated orbit approximately

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one hour and fifty minutes after liftoff. This return to

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flight represents more than just another launch, It's a testament

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to European space capability and determination. With both Vegas C

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and Ariane six operational, Europe strengthens its position in the

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global space launch market while ensuring continued independent access to

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space for scientific missions and satellite deployment. Let's get an

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update from the JWST now. The James Web Space Telescope

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has once again demonstrated its extraordinary capabilities, this time by

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peering into the cosmic web like structure no as the

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Spiderweb protocluster, located an astounding ten billion light years from Earth.

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This massive gathering of galaxies offers us a glimpse into

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the universe as it appeared just four billion years after

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the Big Bang. What makes this observation particularly exciting is

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that the Web telescope has revealed previously hidden details of

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this cosmic metropolis in construction. While earlier studies had identified

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around one hundred galaxies in this region. Web's infrared vision

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has uncovered even more galaxies that were completely obscured by

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cosmic dust and gas. The telescope's ability to penetrate through

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these cosmic veils has provided astronomers with unprecedented views of

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hydrogen gas distribution and galaxy formation processes. Surprisingly, the research

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team found that many of the previously known galaxies weren't

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as dust filled as initially thought, challenging our understanding of

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how these early cosmic structures evolved. One of the most

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remarkable ascis specs of this discovery is that these impressive

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results were achieved in just three and a half hours

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of observation time. The finding suggests that the growth of

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these early galaxies might not have been primarily driven by

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dramatic events like galaxy mergers or interactions, but rather through

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a more gradual accumulation of gas across the structure. This

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massive cosmic city serves as a crucial laboratory for understanding

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how the largest structures in our universe came to be.

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By studying these adolescent galaxies in the process of forming

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one of the universe's largest structures, astronomers can better understand

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how the mature galaxy clusters we see in the local

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universe evolved over billions of years. As you may have noticed,

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our Sun has been flexing its muscles lately, and the

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consequences are being felt in Earth's orbit. In early November,

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three Australian satellites from Curtain Universities bin in our Space

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program met an unexpectedly early demise, burning up in Earth's

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atmosphere just too months into their mission, far short of

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their planned six month lifespan. This premature end wasn't just

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bad luck. It's a direct result of our Sun entering

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an extraordinarily active phase, causing Earth's upper atmosphere to expand

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and create increased drag on satellites in low Earth orbit.

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The Binar satellites, whose name fittingly means fireball in the

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Noongar language, aren't the only victims of this enhanced solar activity.

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Satellite operators worldwide are grappling with similar challenges as solar

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activity surges to levels more than one and a half

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times higher than predicted for this point in the current

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solar cycle. The effects of this increased solar activity are

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visible even from Earth, with auroras appearing more frequently and

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closer to the equator than we've seen in the past

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two decades. But the real drama is playing out in space,

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where satellites face multiple challenges Beyond the atmospheric drag issue.

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The heightened solar activity bombard satellites with charged particles that

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can damage their electrical components and disrupt their operations. While

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larger satellites like the International Space Station and Starlink constellation

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can use thrusters to maintain their orbits, smaller satellites like

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the Binar Cube SATs are completely at the mercy of

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these solar effects. This situation particularly impacts university and research satellites,

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which often lack the sophisticated propulsion systems of their larger counterparts.

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Looking ahead, space weather forecasters predict this intense solar activity

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will likely continue until twenty twenty six, with solar minimum

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not expected until twenty thirty. This presents a significant challenge

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for satellite operators and underscores the growing importance of accurate

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space weather forecasting in our increasingly space dependent world. And

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that's a wrap for today's episode of Astronomy Daily. From

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Trump's surprising NASA pick to ancient asteroid impacts, space telescope innovations,

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and our son's dramatic effects on satellites. It's been another

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fascinating day in space news. I'm Anna, and I want

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to thank you for joining me. If you're hungry for

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more space and astronomy updates, head over to Astronomy Daily

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dot io, where you'll find our constantly updating news feed,

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free daily newsletter, and all our previous episodes available for streaming.

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Don't forget to join our growing community on social media.

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You can find us as astro Daily Pod on Facebook,

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see you tomorrow with more stories from the Cosmos Start