Nov. 1, 2024

S03E195: Space Junk Jitters, Cosmic Googly Eye, and China's Sample Strategy

Astronomy Daily - The Podcast: S03E195
Welcome to Astronomy Daily, your trusted source for the latest space and Astronomy news. I'm your host, Anna, and today we have an exciting array of stories, from the challenges of orbital debris to the latest in...

Show Notes
Transcript

Astronomy Daily - The Podcast: S03E195
Welcome to Astronomy Daily, your trusted source for the latest space and Astronomy news. I'm your host, Anna, and today we have an exciting array of stories, from the challenges of orbital debris to the latest in lunar and Martian exploration.
Highlights:
- Intelsat 33e Breakup: The recent disintegration of the Intelsat 33e satellite has intensified concerns over space debris, adding to the already critical situation in low Earth orbit. With over 13,000 metric tons of space junk orbiting our planet, this incident underscores the urgent need for effective measures to prevent further collisions and ensure safe operations in space.
- Mars's Cosmic Googly Eye: NASA's Perseverance rover has captured a stunning sight of Mars's moon Phobos transiting the sun, creating a cosmic googly eye effect. This observation helps scientists refine their understanding of Phobos's orbital dynamics, revealing its gradual descent towards Mars.
- Comet Detection Innovation: A new approach to comet detection, by analyzing meteor showers, could revolutionize our ability to predict potentially hazardous long-period comets. This method could provide early warnings and enhance planetary defense strategies.
- China's Mars Sample Return Race: China's ambitious Tianwen 3 mission aims to return Mars samples by 2028, potentially outpacing NASA's efforts. This space race highlights the growing competition in Martian exploration and its implications for future space leadership.
- India's Lunar Ambitions: The Chandrayaan 4 mission is set to launch in 2028, targeting the Moon's south pole for a sample return mission. This endeavor marks a significant step in India's broader lunar exploration strategy, aiming for human lunar landings by 2040.
- IRIS 2 Broadband Constellation: The European Commission's IRIS 2 project, aiming to deploy over 290 satellites, faces delays and cost increases. Despite challenges, the initiative seeks to bolster European space industry resilience and connectivity.
For more cosmic updates, visit our website at astronomydaily.io. Sign up for our free Daily newsletter, explore sponsor deals, and catch up on past episodes. Join our community on social media by finding us as #AstroDailyPod on Facebook, X, YouTubeMusic, 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.
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WEBVTT

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Welcome to Astronomy Daily, your source for the latest news

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in space and astronomy. I'm your host, Anna, and today

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we've got a fascinating roundup of stories covering everything from

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orbital debris concerns to lunar missions in Mars exploration. We'll

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be exploring some groundbreaking developments that are shaping our understanding

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of the cosmos and humanity's ambitious ventures beyond Earth. Our

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first story today highlights a growing crisis above our heads.

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The recent breakup of the Intel Sat thirty three E

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satellite has added another troubling chapter to the mounting space

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debris problem. This broadband communications satellite, positioned about thirty five

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thousand kilometers above the Indian Ocean, suddenly lost power and

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broke into at least twenty pieces. According to US Space

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Forces confirmation. This incident adds to an already critical situation

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in low Earth orbit, where we currently have an estimated

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thirteen thousand metric tons of space junk circling our planet.

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It's a stark reminder of what scientists called the Kessler syndrome,

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a scenario first proposed by NASA scientists in nineteen seventy

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eight where the density of objects in orbit becomes so

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high that collisions create a cascade effect, generating more debris

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and more collisions. The numbers are staggering. The European Space

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Agency's Space Debris Office estimates there are about forty thousand,

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five hundred objects larger than ten centimeters in orbit, plus

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an additional one point one million objects between one and

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ten centimeters and a staggering one hundred thirty million pieces

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smaller than a centimeter. Back in two thousand and nine,

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Donald Kessler himself declared that the orbital situation had already

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reached the point of instability. While tracking technology is improving

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and various solutions are being developed, including missions like adres

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Jay and Clearsat one designed to actively remove debris, the

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challenge continues to grow. The Intelsat incident underscores the urgent

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need for better frameworks to prevent future collisions and address

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the removal of existing space debris. Without effective action, we

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risk compromising our ability to safely operate in Earth orbit,

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potentially impacting everything from communications to scientific research. Next up today,

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let's get a Mars update. In what can only be

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described as a fascinating astronomical spectacle, NASA's Perseverance rover has

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captured an eerie and remarkable sight from its vantage point

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in Mars's Jesio Crater. The rover witnessed Phobos, one of

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Mars's two moons, passing directly between the Sun and Mars,

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creating what looks remarkably like a cosmic googly eye in

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the Martian sky. This rare transit occurred on September thirtieth,

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during the rover's one two hundred eighty fifth Martian Day

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of exploration. Using its advanced MASTCAMZ camera system, Perseverance recorded

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the potato shaped moon as it partially blocked the Sun's disk,

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casting its shadow known as the ntumbra, across the red

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planet's surface. To put this celestial dance in perspective, Phobos

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is quite tiny compared to our own Moon, about one

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hundred fifty seven times smaller in fact, measuring only seventeen

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miles across at its widest point. Despite its small size,

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these transits are relatively common on Mars because Phobos orbits

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very close to the planet's surface and almost perfectly along

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its equator. The Moon completes an orbit every seven point

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six hours, which means these transit events typically last only

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about thirty seconds. What makes this observation particularly valuable is

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that it helps scientists refine their understanding of Phobos' orbital dynamics.

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By comparing images of these transits over time, researchers can

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track subtle changes in the moon's orbit. Current calculations suggest

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that Phobos is gradually moving closer to Mars and is

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predicted to collide with the planet in approximately fifty million years,

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a cosmic blink of an eye in astronomical terms. This

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isn't the first time NASA has captured such an event

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on Mars. Several rovers, including Curiosity and Opportunity, have witnessed

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similar transits over the years, but each observation adds another

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piece to our understanding of mars complex system of moons,

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and their ultimate fate. Speaking of things colliding with planets,

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for those who've long viewed comets as mysterious harbingers in

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our night sky, scientists are now developing an innovative approach

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that could revolutionize how we detect these celestial wanderers. By

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studying meteor showers, researchers believe they can predict the orbits

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of potentially hazardous long period comets years before they become

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visible to our telescopes. The connection between meteor showers and

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comets has been well established. Those spectacular shooting stars we

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see during events like the Perseods or Geminids are actually

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debris trails left behind by comets crossing Earth's orbit. But

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until now astronomers have typically worked forward from known comets

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to identify meteor showers. This new research flips that approach

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on its head. Using sophisticated computer simulations, scientists have demonstrated

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that by carefully analyzing meteor shower patterns, they could potentially

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trace them back to their parent comets, even when those

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comets are still far from the Inner Solar System. With

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the upcoming Reuben observatory's powerful sky scanning capabilities, this method

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could provide crucial early warnings of approaching comets. The team

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simulations covered comets with orbital periods ranging from two hundred

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to four thousand years. While not all comet orbits produce

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useful shower patterns, the researchers identified seventeen scenarios where meteor

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shower observations could help locate their parent comets months or

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even years before traditional detection methods would spot them. They've

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already put this theory to the test with real world data.

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Looking at the Sigma Hydrid meteor shower, which appears each December,

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researchers found they could have predicted the arrival of Comet

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Nishimura eight months before its actual discovery in twenty twenty three.

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This practical demonstration shows just how powerful this new detection

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method could be for planetary defense and our understanding of

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these ancient Solar System visitors. Next up, news from China's

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rapidly developing space program. A fascinating space race is heating

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up between China and the United States. But this time

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it's not about putting humans on another world. It's about

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who will be the first to bring pieces of Mars

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back to Earth. China has recently announced plans to accelerate

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their Mars sample return mission, aiming to launch CHAN three

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in twenty twenty eight, two years earlier than previously scheduled.

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This ambitious mission will require two separate launches using China's

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long March five carrier rockets. The plan involves not just

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landing on Mars, but also collecting samples, launching them back

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into Mars orbit, and then safely returning them to Earth,

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all within the same year. China's approach draws on their

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successful lunar sample return missions, including their recent Far side

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Moon sample collection. Meanwhile, NASA's Mars sample return mission, a

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joint effort with the European Space Agency, continues to face

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scrutiny and challenges. The project is currently under review, with

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teams working to find a way to bring samples back

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before twenty forty while keeping costs under eleven billion dollars.

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These samples would come from carefully selected cores currently being

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collected by the Perseverance Rover in Jaesaro Crater. The scientific

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community has mixed feelings about this competition. While many researchers

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welcome the prospect of getting Mars samples sooner rather than later,

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regardless of the source, others express concern about China potentially

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achieving this milestone first. Some experts are calling this a

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potential Sputnik moment that could have significant implications for future

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Mars exploration leadership. China's mission may opt for a simpler

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grab sample approach, collecting whatever material is within reach of

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their lander. While this might be less scientifically valuable than

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NASA's carefully selected samples, the political and technological achievement of

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being first to return material from Mars could mark a

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significant shift in space exploration prominence, and another country with

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aspirations of bringing samples back from a celestial neighbor, India's

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space program, is taking another bold step forward with their

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recently announced Chandrian four mission. The Indian Space Research Organization

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or ISRA, is targeting a twenty twenty eight launch for

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this ambitious sample return mission to the Moon's South Pole,

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aiming to collect around three kilograms of lunar material from

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this scientifically fascinating region. The mission's complexity is remarkable, involving

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five separate spacecraft modules and requiring two launches of India's

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most powerful rocket, the LVM III. The carefully choreographed plan

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calls for a lander and sample collecting ascender to be

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launched first, followed by a transfer module and re entry

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module that will orbit the Moon after collecting the samples.

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The ascender will launch from the lunar surface and perform

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a crucial rendezvous with the orbiting modules before the samples

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begin their journey back to Earth. To prepare for one

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of the mission's most challenging aspects, the orbital docking of spacecraft,

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ISRO will conduct a space docking experiment known as SPADEX,

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either later this year or in early twenty twenty five.

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They're also developing new technologies, including a robotic arm for

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surface sample collection and a drilling mechanism to gather material

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from beneath the lunar surface. What makes this mission particularly

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interesting is its target location near the lunar South Pole,

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an area rich in water ice that's becoming increasingly important

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for future space exploration. At an estimated cost of about

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two hundred fifty million dollars, Isero is demonstrating its ability

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to achieve ambitious goals while maintaining relatively modest budgets. The

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Chandrian formission isn't standing alone. It's part of India's broader

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lunar exploration strategy. Plans are already in motion for chandrie

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On five, a joint mission with Japan that will feature

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a much larger rover. These missions are stepping stones toward

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India's ultimate goal of landing astronauts on the Moon by

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twenty forty and establishing a lunar base before twenty fifty next.

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As if our skies weren't cluttered enough already, the European

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Commission has recently announced its pressing ahead with its ambitious

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plans for a sovereign broadband constellation, though the project is

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facing some significant hurdles. The initiative, known as iris TI

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Infrastructure for Resilience, Interconnectivity and Security by Satellite, aims to

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deploy more than two hundred and ninety satellites by twenty thirty,

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creating a robust communications network for both government and commercial use.

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Originally slated to begin global services by twenty twenty seven,

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with satellite deployment starting in twenty twenty five, the project

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has encountered delays and substantial cost increases. What began as

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a six point five billion euroventure has now reportedly ballooned

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to around ten billion euros. The initial funding structure, which

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called for sixty percent public funding with the remainder coming

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from private industry, is currently being reassessed. A consortium called

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Space Rice, led by major European satellite operators SES, Eutelsat

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and Hispasat, has submitted what's being called a best and

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final offer for the project, while the details remain under wraps.

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The European Commission is proceeding with a twelve year concession contract,

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though they've noted that additional funding arrangements may be necessary

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after twenty twenty seven. The project has also seen some

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interesting shifts in its industrial organization. European manufacturing giants Airbus,

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Defense and Space and Thale's Alenia Space, who were initially

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co leaders of the consortium, have now moved into subcontractor roles.

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This restructuring appears to be in response to price and

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performance pressures. Despite these challenges, the European Commission remains committed

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to ensuring the project benefits the broader European space industry.

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They're maintaining their requirement that at least thirty percent of

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larger contracts be subcontracted to smaller businesses, aiming to foster

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a more diverse and robust space economy across the region.

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And that brings us to the end of today's space

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and astronomy news. Thanks for tuning in to another episode

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of Astronomy Daily. I'm Anna and I hope you've enjoyed

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today's journey through the latest developments in space exploration and astronomy.

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