Aug. 29, 2024
S03E140: SpaceX's Latest Challenges, Electric Field Milestone, and XB-1's Triumph
Astronomy Daily - The Podcast: 29th August 2024
Welcome to Astronomy Daily, the podcast where we explore the latest in space and Astronomy news. I'm your host, Anna. Today we have a fantastic lineup of stories that will take you from the high stakes...
Astronomy Daily - The Podcast: 29th August 2024
Welcome to Astronomy Daily, the podcast where we explore the latest in space and Astronomy news. I'm your host, Anna. Today we have a fantastic lineup of stories that will take you from the high stakes of space travel to fascinating new scientific discoveries. From SpaceX facing challenges with their Falcon 9 rocket, to scientists measuring a planet-wide electric field for the first time ever, we have so much to explore. We'll also delve into Boom Supersonic's second test flight of their XB-1 aircraft, and wrap up with a look at the detection of water vapor in the atmosphere of an ultra-hot, Saturn-like exoplanet. So grab your telescopes and let's dive in.
Highlights:
- SpaceX Falcon 9 Grounded: The Federal Aviation Administration has grounded SpaceX's Falcon 9 rocket following a failed booster landing. The booster, serial number B1062, was consumed in a dramatic fireball on the deck of the drone ship "A Shortfall of Gravitas." This incident occurred at the tail end of its record-setting 23rd flight. An investigation has been mandated to thoroughly understand the root cause of the mishap.
- Polaris Dawn Mission Delays: The Polaris Dawn astronaut mission has been delayed twice in the same week due to a helium leak and recovery weather concerns. The crew remains in quarantine, awaiting clearance for their next launch attempt. Timing for the launch remains uncertain due to the ongoing FAA investigation and other logistical challenges.
- Planet-Wide Electric Field Measured: For the first time in history, scientists have successfully measured a planet-wide electric field known as the ambipolar electric field using NASA's Endurance mission. This breakthrough plays a crucial role in atmospheric escape and shapes our ionosphere, offering new insights into planetary atmospheres beyond Earth.
- Boom Supersonic's XB-1 Test Flight: Boom Supersonic's XB-1 aircraft successfully completed its second test flight, reaching an altitude of 10,400 ft and achieving a speed of 277 mph. This flight demonstrated the retraction and extension of landing gear for the first time and tested a new digital stability augmentation system.
- Water Vapor on Ultra-Hot Exoplanet: Researchers have detected water vapor in the atmosphere of HD 149026 b, an ultra-hot Saturn-like exoplanet located approximately 250 light years away. This discovery was made using transmission spectroscopy and provides valuable insights into the characteristics and composition of exoplanetary atmospheres.
For more exciting content, be sure to visit our website at astronomydaily.io. There you can catch up on the latest space and Astronomy news with our constantly updating newsfeed. You can also sign up for our free Daily newsletter so you never miss a beat in the cosmos.
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WEBVTT
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Welcome to Astronomy Daily, the podcast where we explore the
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latest in space and astronomy news. I'm your host Anna.
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Today we have a fantastic lineup of stories that will
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take you from the high stakes of space travel to
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fascinating new scientific discoveries. From SpaceX facing challenges with their
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Falcon nine rocket to scientists measuring a planet wide electric
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field for the first time ever. We have so much
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to explore. Will also delve into Boom SuperSonics second test
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flight of their XB one aircraft, and wrap up with
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a look at the detection of water vapor in the
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atmosphere of an ultra hot Saturn like exoplanet. So grab
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your telescopes and let's dive in. First up today, the
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Federal Aviation Administration has grounded SpaceX's Falcon nine rocket following
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a failed booster landing, marking the second mishap in less
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than two months. The booster in question, serial number b
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oney sixty two, was consumed in a dramatic fireball on
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the deck of the drone chip a shortfall of gravitas
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stationed in the Atlantic Ocean. This incident occurred at the
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tail end of its record setting twenty third flight after
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having successfully launched a batch of Starlink satellites. In a statement,
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the FAA emphasized that while no injuries or public property
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damage were reported, an investigation has been mandated to thoroughly
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understand the root cause of the mishap. This grounding follows
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a similar stance taken by the FAA after a Falcon
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nine upper stage failure on July twelfth during the Starlink
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nine three mission, which led to the loss of twenty satellites.
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SpaceX rockets only resumed flights on July twenty seventh for
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the Starlink ten to nine mission. Despite the setback, SpaceX
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remained steadfast in its commitment to resolving the issue. John Edwards,
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the SpaceX Vice president of Falcon Launch Vehicles, highlighted on
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social media that while unfortunate, the event posed no threat
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to the primary mission or public safety. He assured that
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the team is working diligently to identify the root cause
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and implement corrective actions as soon as possible. Similarly, Kikodonchev,
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another high ranking SpaceX official, stressed that the lessons learned
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from these recovery failures will not only enhance recovery reliability,
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but improve acent reliability as well. This incident coincides with
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a challenging period for SpaceX, which had to delay the
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Polaris Dawn astronaut mission twice in the same week due
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to a helium leak and recovery weather concerns. The Polaris
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Dawn crew remains in quarantine awaiting clearance for their next
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launch attempt. Timing for the Polaris Dawn launch remains uncertain,
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largely due to the ongoing FAA investigation, landing, weather, and
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launch pad availability. The mission is set to take off
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from Launch Complex thirty nine A at Kennedy Space Center,
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which also needs to be prepared for NASA's Europa Clipper mission,
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with a launch window opening on October tenth. Complicating matters further,
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Space Launch Complex forty at Cape Canaveral is already booked
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for NASA's Crew nine mission to the International Space Station,
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penciled in for no earlier than September twenty fourth. Ultimately,
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the date for Polaris Dawn will depend on how quickly
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SpaceX can satisfy the FAA's requirements and how cooperative the
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weather will be. It's a race against time for the
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SpaceX team, who continue to epitomize perseverance and adaptation in
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the relentless world of space exploration. Next, for the first
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time in history, scientists have successfully measured a planet wide
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electric field known as the ambipolar electric field using NASA's
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Endurance Mission. This breakthrough field plays a crucial role in
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atmospheric escape shaping our ionosphere, and it opens new doors
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for understanding planetary atmospheres, not just on Earth, but also beyond.
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Let's dive into the discovery. The ambipolar electric field was
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first hypothesized over six decades ago. It was believed to
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drive how Earth's atmosphere escapes above the North and South poles. However,
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actually measuring it remained a challenge until now. Utilizing data
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from NASA's Endurance Mission, an international team of scientists has
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confirmed the existence of this field and even quantified its strength.
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The ambipolar electric field is subtle yet potent. Despite being
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weak about zero point five to five volts, roughly equivalent
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to a small watch battery, it draws particles from the
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atmosphere into space. This phenomenon has been termed the polar wind.
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For years, scientists noticed a stream of particles escaping from
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Earth's poles, but couldn't precisely explain why many were cool
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yet moving at supersonic speeds. Glenn Collinson, the principal investigator
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of the Endurance mission, noted that this minuscule electric field
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exerts a force ten times stronger than gravity on hydrogen ions,
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which are the most abundant particles in the polar wind.
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To carry out their observations, the Endurance team chose an
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ideal location Sphalbarred in the Norwegian Arctic, home to the
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Northernmost Rocket Range. On May eleventh, twenty twenty two, they
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launched their rocket, reaching an altitude of four hundred and
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seventy seven miles. During its short lived flight, the Endurance
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made groundbreaking measurements unearth a mere zero point five to
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five volts change in electric potential across three hundred and
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twenty two miles of altitude. Though minuscule, this measurement has
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vast implications. The significance of the results can't be overstated.
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This electric field can elevate particles, essentially acting as a
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conveyor belt, lifting the atmosphere into space. The research team
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found that the ambipolar field increases the ionosphere's scale height
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by two hundred and seventy one percent, allowing it to
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remain denser at higher altitudes. The implications extend far beyond Earth.
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Since the ambipolar field is generated by the internal dynamics
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of an atmosphere, it's expected to exist on other planets,
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such as Venus and Mars. This discovery offers a new
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lens through which to explore the evolution of planetary atmospheres
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and even assess the habitability of other worlds. The study,
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published in the prestigious journal Nature, marks a significant milestone
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in our understanding of planetary atmospheres. With this knowledge, scientists
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can now begin to unravel the field's role and how
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it's been shaping our planet and potentially others over time.
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That's a wrap on this fascinating break through an atmospheric science.
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Stick around as we delve into more groundbreaking discoveries here
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on Astronomy Daily. Boom SuperSonics XB one aircraft successfully completed
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its second test flight from the Mojave Air and Spaceport.
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This flight, lasting about fifteen minutes, saw the XB one
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reaching an altitude of ten than four hundred feet and
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achieving a speed of two hundred and seventy seven miles
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per hour. Impressively. This flight demonstrated the retraction and extension
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of landing gear for the first time, along with testing
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a new digital stability augmentation system designed to enhance handling.
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Blake Scholl, founder and CEO of Boom Supersonic, shared his
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excitement by saying XB one had a fantastic second flight
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this morning. Initial results indicate we've successfully resolved the findings
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from flight one and are excited to continue flight testing
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on the path to supersonic flight. This milestone marks another
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significant step towards the return of supersonic passenger travel, a
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goal that Boom Supersonic is inching closer to with each
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successful test. The XB one test plane had its made
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in flight earlier in March of this year. Now, Boom
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Supersonic is looking to ramp up its flight rate, with
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around ten more tests planned before attempting supersonic speeds. Each
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test brings the company closer to achieving its ambitious objectives
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of revolutionizing air travel, making it faster and more efficient.
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The XB one program is part of the broader design
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and development process for Boom's flagship project Overture, a planned
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supersonic airliner. Boom Supersonic and visions of future where supersonic
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travel redefines the pace of global air travel, cutting down
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travel times significantly. This recent test flight underscores their commitment
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to bringing that vision to life, one flight at a time.
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As the team at Boom Supersonic continues to push the
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bounds of aviation technology, the promise of supersonic passenger travel
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edges closer to becoming a reality, holding the potential to
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transform the way we think about air travel in the
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not so distant future. Next up, yet another exciting discovery
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involving water. Researchers have detected water vapor in the atmosphere
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of HD one four nine zero two six B, an
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ultra hot Saturn like exoplanet located approximately two hundred and
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fifty light years away in the constellation of Hercules. This exoplanet,
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which is similar in size to Saturn, has an extremely
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close orbit to its host star, nearly ten times closer
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than Mercury's orbit around the Sun. As a result, it
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completes a full orbit in just about two point nine days,
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leading to surface temperatures soaring above seventeen hundred kelvin, hot
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enough to melt even the strongest steel. The discovery of
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water vapor was made using a technique called transmission spectroscopy.
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This method involves observing the planet as it transits or
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passes in front of its host star from our perspective
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on Earth. When this happens, some of the star's light
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filters through the planet's atmosphere. The gases in the atmosphere
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absorb specific wavelengths of light, creating a unique absorption spectrum
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which can be detected and analyzed. One of the major
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challenges in observing the atmosphere of such exoplanets lies in
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the high contrast between the bright star and the dim planet.
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This high contrast often means that the planetary atmospheric signatures
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are exceedingly faint and can be easily lost in the
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stellar photon noise. However, the extreme temperatures and close proximity
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of HD one four nine zero two six B to
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its host star made the atmospheric detection somewhat easier, albeit
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still a significant challenge. The strength of these atmospheric signatures
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would be stronger for hotter planets, as their atmospheres are
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more extended and therefore more detectable. Despite the inherent difficulties,
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the researchers were able to separate the planetary absorption spectrum
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from the stellar spectrum by analyzing the light before and
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during the transit. This allowed them to identify and confirm
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the presence of water vapor in the planet's atmosphere. This
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discovery provides valuable insights into the characteristics and composition of
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exoplanetary atmospheres, shedding light on the complex processes occurring in
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these distant worlds. Research like this not only deepens our
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understand of exoplanets, but also helps us piece together the
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vast diversity of planetary systems beyond our own. Thank you
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for tuning into Astronomy Daily. I'm your host Anna. For
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more exciting content, be sure to visit our website at
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our archive of past episodes for more fascinating stories and insights.
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So join us and be part of our journey to
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the stars. Until next time, keep looking upday stars. The
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story is the soul. The story is the soul.
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127
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128
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129
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131
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132
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134
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135
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136
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137
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157
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158
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159
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160
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161
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162
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163
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164
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165
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166
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169
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170
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171
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172
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173
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174
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175
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177
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178
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179
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180
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181
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182
00:10:46.159 --> 00:10:48.120
183
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184
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