Speaker 1: Welcome to Astronomy Daily, where we cover the latest in
space and astronomy news. I'm your host Anna. Today we've
got an exciting lineup that will take you on a
journey through some of the most intriguing recent updates in
the cosmos. We'll start with NASA's latest move to push
the Crew nine mission launch to September as they delve
into the intricacies of Boeing Starliner spacecraft. Then we'll shift
gears to explore groundbreaking research that peels back the layers
on Venus, revealing that our inhospitable evil twin might share
more in common with Earth than we ever imagined. Finally,
we'll spotlight a compelling study on red dwarf stars and
how their stellar flares could pose both challenges and potentials
for habitability on nearby exoplanets. So grab your telescopes and
your curiosity and let's dive into today's episode. NASA is
postponing the launch of the Crew nine mission to September
due to ongoing analysis of Boeing Starliner spacecraft. This delay
will give mission managers more time to finalize plans for
the crew flight test, which is currently docked at the
International Space station thruster issues with the Starliner spacecraft have
been the main concern. NASA is taking this extra time
to analyze the results of recent hot fire testing and
to ensure the reliability of the integrated propulsion system. Until
either the star Liner or Crew eight Dragon departs the
space station, there will be no available docking ports for
the Crew nine mission. The delay helps NASA maintain rigorous
safety protocols while allowing additional time to study and confirm
the performance of the star Liner. Additionally, this pause will
enable a careful review of the return flight plans for
the star Liner, ensuring every procedure is meticulously thought out
before moving forward. This delay isn't just about pushing back
the date, it's about ensuring every detail is meticulously checked.
NASA's team is using this period to rigorously test and
validate Starliner's integrated propulsion system. By taking the time to
analyze recent docked hot fire tests and finalize their flight rationale,
they aim to guarantee the spacecraft's reliability for its return
to Earth. In the meantime, there's an exciting development on
the horizon. The Crew nine mission, scheduled for late September,
will not only continue NASA's partnership with SpaceX, but will
also be the first crude flight to launch from Space
Launch Complex forty. This newly upgraded site now boasts the
state of the art Crew Access Tower, a milestone signifying
a new chapter for SpaceX's crude missions. This move underscores
the advancements and collaborations driving modern space exploration. One critical
aspect of launching astronauts into space is ensuring their safety
in the event of an emergency. With the upcoming Artemis
the Second Mission, NASA is stepping up its game by
introducing a cutting edge ground based emergency egress system specifically
designed for rapid evacuation if something goes wrong during the
launch countdown. This new system utilizes track cables connected to
the mobile launcher guiding baskets similar to ski lift gondolas,
down to the launch pad perimeter. In the event of
an emergency, personnel can quickly descend from the launch tower
using these baskets positioned at the same level as the
crew Access arm where astronauts enter the spacecraft. The baskets
can carry up to five people or a total weight
of one thousand, five hundred pounds each. The procedure works
like a well oiled machine. As soon as an emergency
is declared, crew members will exit the spacecraft or white
room on the mobile launcher and make their way to
the baskets. From there, they'll ride down the one three
hundred thirty five foot long cables to reach the ground
far away from any potential danger. Once they've landed, armoured
emergency response vehicles will be waiting to whisk them away
to safety. Artemis the Second is set to be NASA's
first mission with crew aboard the SLS Rocket and O
Ryan spacecraft. Though the emergency Egress system might never need
to be used, its introduction reinforces NASA's unwavering commitment to
astronaut safety. Charlie Blackwell Thompson, Artemis launch director, emphasized that
these emergency protocols are absolutely essential for crew safety, even
though the likelihood of needing them is very low. While
it is very unlikely that we will need the emergency
Egress and pad abort systems, they are built and tested
to ensure that if we do need them, then they
are ready to go. In addition to NASA's system for
Artemis the Second, SpaceX and Boeing have implemented their own
unique egress systems for their respective launches. At SpaceX's Launch
Complex thirty nine, a a slide wire cable system is used,
enabling baskets to swiftly transport personnel away from the launch
pad in an emergency. Meanwhile, at space Launch Complex forty one,
Boeing and United Launch Alliance have designed seats that ride
down slide wires similar to a thrilling zip line experience,
ensuring a quick and efficient evacuation. These measures, although different,
all share the common goal of prioritizing the safety and
swift egress of the crew and personnel involved in these
monumental missions. New research suggests that Venus, often dubbed Earth's
inhospitable evil twin, may have once been tectonically active, despite
its current stagnant lithosphere. Today, Venus is known for its
extreme surface conditions, temperatures hot enough to melt lead and
surface pressures intense enough to crush most materials. However, this
new study reveals that the planet's surface features such as faults, folds,
and volcanoes indicate a history of significant tectonic activity. Fabio Capitanio,
a researcher from the Monash University School of earth atmosphere
and environment. Emphasized that the discovery challenges our existing understanding
of planetary evolution. The study, conducted in collaboration with NASA,
examined striking plateaus called tesserae on Venus, which resemble Earth's
earliest continental formations. Capitanio explained that the intense geological processes
on Venus billions of years ago could be compared to
those that shape the Earth's early continents. The team's findings
offer new perspectives on the geological similarities between Venus and Earth,
potentially unlocked secrets about the early history of our own planet.
Stay tuned for more exciting updates from missions like da Vinci, Veritas,
and Envision, which aim to delve deeper into Venus' geological past.
Research team utilized data from NASA's Magellan spacecraft, which first
imaged the entire surface of Venus back in nineteen ninety.
They coupled this data with advanced computer modeling to unravel
the geological processes at play. The findings suggest that the
extreme heat on Venus may have caused its surface to
thin and melt, forming elevated areas as molten rock rows
over time. This stretching and subsequent cooling left behind the
Tesseray plateaus we see today. These features are strikingly similar
to Earth's ancient continental formations, indicating that Venus and Earth
may have shared a more comparable geological history than previously believed.
A recent study has shed light on the potential dangers
facing habitable planets around red dwarf stars. The research, led
by astronomers from the University of Hawaii Institute for Astronomy,
reveals that these stars can emit far ultraviolet radiation at
levels much higher than previously believed. This finding has striking
implications for the habitability of planets orbiting red dwarfs. The
team utilized archival data from NASA's now decommissioned gayleex Space telescope,
which observed the sky in ultraviolet wavelengths from two thousand
and three to twenty thirteen. Through advanced computational techniques, the
researchers were able to identify and analyze flares from around
three hundred thousand nearby stars. Their results show that the
far UV radiation from these stellar flares is on average
three times more energetic than earlier models had assumed, and
can reach up to twelve times the previously expected levels.
This intense UV radiation could have a dual impact on
surrounding planets. On one hand, it might erode planetary atmospheres,
which is detrimental to the potential for life. On the
other hand, it could also contribute to forming RNA building
blocks essential for the creation of life. Therefore, while the
elevated UV levels pose a threat, they could also play
a role in the fundamental processes that lead to life.
This study calls for more observational data to better understand
the environments around these less massive stars and their impact
on exoplanet habitability. This high energy UV radiation emitted by
red dwarf stars is a double edged sword. On one hand,
it has the potential to erode the atmospheres of nearby planets,
stripping away the very layer that could make those worlds habitable.
Without a protective atmosphere, these planets could be bombarded by
harmful radiation, making the surface inhospitable to life as we
know it. On the other hand, UV radiation might play
a crucial role in the formation of RNA building blocks,
which are essential for the creation of life. This suggests
a complex interplay where the same forces that could threaten
a planet's habitability might also foster the very beginnings of life.
The exact mechanisms behind this far UV emission remain unknown,
but it's clear that understanding them is key to unlocking
the mysteries of early planetary environments. More data from space
telescopes will be necessary to delve deeper into this phenomenon.
Further studies will aim to reveal how widespread these intense
radiation events are and their true impact on the habitability
of planets around these common yet volatile stars. That's it
for today's episode of Astronomy Daily. I've been your host Anna.
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