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Space Exploration 10 December 2025 - 26 December 2025

Comet 3I/ATLAS Today (Dec. 26, 2025): Wobbling Jets Detected in a Rare Sun-Facing Tail as the Interstellar Visitor Departs

Comet 3I/ATLAS Today (Dec. 26, 2025): Wobbling Jets Detected in a Rare Sun-Facing Tail as the Interstellar Visitor Departs

Astronomers report Comet 3I/ATLAS shows wobbling jet structures inside a rare sun-facing anti-tail, with the jets’ angle shifting every 7.74 hours. The anti-tail extended up to 1 million kilometers. This marks the first periodic jet-angle modulation seen in an interstellar comet. On Dec. 26, 3I/ATLAS is magnitude 13.2, about 1.8 AU from Earth, in Leo.
26 December 2025
Doomed SpaceX Starlink Satellite 35956 Photographed From Orbit After In‑Space Anomaly Spreads Debris

Doomed SpaceX Starlink Satellite 35956 Photographed From Orbit After In‑Space Anomaly Spreads Debris

A high-resolution orbital image captured Dec. 18 shows damaged Starlink satellite 35956 still largely intact after a Dec. 17 anomaly caused it to lose contact and begin an uncontrolled descent. SpaceX says the satellite and debris will burn up in the atmosphere within weeks and pose no risk to the ISS. Observers attribute the incident to an internal failure, not a collision.
24 December 2025
ISRO’s ‘Baahubali’ LVM3-M6 Launches BlueBird 6 (BlueBird Block-2) for AST SpaceMobile, Setting a New Heaviest-Payload Record — Dec. 24, 2025

ISRO’s ‘Baahubali’ LVM3-M6 Launches BlueBird 6 (BlueBird Block-2) for AST SpaceMobile, Setting a New Heaviest-Payload Record — Dec. 24, 2025

India’s LVM3-M6 rocket launched from Sriharikota on December 24, 2025, deploying AST SpaceMobile’s BlueBird 6, the heaviest payload yet for LVM3, into a 520 km Low Earth Orbit. Liftoff was delayed by 90 seconds due to a conjunction risk. BlueBird 6 features a 223 m² phased-array, the largest of its kind in LEO, and is designed to connect directly to standard smartphones.
24 December 2025
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ISRO LVM3-M6 BlueBird Block-2 Mission: Countdown Begins for “Baahubali” Rocket Launch Carrying AST SpaceMobile’s BlueBird 6

ISRO LVM3-M6 BlueBird Block-2 Mission: Countdown Begins for “Baahubali” Rocket Launch Carrying AST SpaceMobile’s BlueBird 6

ISRO began final countdown operations on December 23 for the LVM3-M6 mission, set to launch BlueBird Block-2, a 6,100-kg communications satellite for direct-to-smartphone broadband. Liftoff is scheduled for 8:54 a.m. IST on December 24 from Sriharikota. Final readiness checks and propellant loading were confirmed. ISRO will livestream coverage starting at 8:24 a.m. IST.
24 December 2025
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Comet 3I/ATLAS Today (Dec. 23, 2025): New Spacecraft Data, X‑Rays, “Radio Signals,” and the Next Big Test at Jupiter

Comet 3I/ATLAS Today (Dec. 23, 2025): New Spacecraft Data, X‑Rays, “Radio Signals,” and the Next Big Test at Jupiter

Comet 3I/ATLAS, the third confirmed interstellar object, passed closest to Earth on Dec. 19 at 1.8 astronomical units, posing no threat. ESA and Japan’s XRISM mission detected an X-ray glow from the comet as its gases interacted with the solar wind, a first for an interstellar comet. NASA estimates its nucleus is between 440 meters and 5.6 kilometers wide. 3I/ATLAS was discovered by the ATLAS survey in Chile on July 1, 2025.
23 December 2025
Comet 3I/ATLAS Today (Dec. 20, 2025): Europa Clipper’s UV Surprise, Parker Solar Probe Images, and the Latest Forecast

Comet 3I/ATLAS Today (Dec. 20, 2025): Europa Clipper’s UV Surprise, Parker Solar Probe Images, and the Latest Forecast

NASA’s Europa Clipper spacecraft captured ultraviolet data of interstellar Comet 3I/ATLAS as it passed near Earth, while ground-based telescopes had limited visibility. NASA’s Parker Solar Probe also tracked the comet near the Sun. As of December 20, 2025, 3I/ATLAS is 1.8 AU from Earth, magnitude 12.8, and receding from the inner solar system.
20 December 2025
The Role of Starlink in Scientific Research: How SpaceX’s Satellite Internet Is Transforming Field Science, Earth Observation, and Space Missions—While Challenging Astronomy

The Role of Starlink in Scientific Research: How SpaceX’s Satellite Internet Is Transforming Field Science, Earth Observation, and Space Missions—While Challenging Astronomy

Starlink’s satellite internet now underpins real-time scientific work in remote areas, including Yellowstone and Antarctic field camps, by enabling fast data transmission and live collaboration. Researchers report improved monitoring and troubleshooting capabilities. Meanwhile, astronomers face new challenges as Starlink satellites interfere with telescope images and radio observations, prompting efforts to mitigate their impact.
18 December 2025
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Jared Isaacman NASA Today: Senate Confirms Billionaire Spaceflight Veteran as New NASA Administrator (Dec. 17, 2025)

Jared Isaacman NASA Today: Senate Confirms Billionaire Spaceflight Veteran as New NASA Administrator (Dec. 17, 2025)

The U.S. Senate confirmed Jared Isaacman as NASA administrator Wednesday in a 67–30 vote, ending a year of interim leadership. Isaacman, 42, is the billionaire founder of Shift4 and a private astronaut who led SpaceX’s Inspiration4 and Polaris Dawn missions. Sixteen Democrats joined 51 Republicans in support, with all 30 “no” votes from Democrats. Isaacman takes over as NASA pursues major Moon and Mars projects.
18 December 2025
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Interstellar Comet 3I/ATLAS Nears Closest Earth Flyby on Dec. 19: New X‑ray Views, UN Tracking, and What Scientists Know Now

Interstellar Comet 3I/ATLAS Nears Closest Earth Flyby on Dec. 19: New X‑ray Views, UN Tracking, and What Scientists Know Now

Interstellar comet 3I/ATLAS will make its closest approach to Earth on December 19, 2025, passing about 270 million kilometers away. The comet poses no threat, but global observatories are tracking it, aided by the International Asteroid Warning Network. New X-ray observations are revealing rare gases in the comet’s makeup. 3I/ATLAS is only the third confirmed interstellar object seen in our solar system.
15 December 2025
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Comet 3I/ATLAS Today (Dec. 15, 2025): The Interstellar Visitor Turns Green Ahead of Its Dec. 19 Flyby

Comet 3I/ATLAS Today (Dec. 15, 2025): The Interstellar Visitor Turns Green Ahead of Its Dec. 19 Flyby

Comet 3I/ATLAS, the third confirmed interstellar object, is now brighter and glowing green after its late-October solar passage, according to astronomers. The comet’s intensified green color, likely from diatomic carbon, and a prominent anti-tail are drawing attention ahead of its December 19 closest approach, when it will pass about 270 million kilometers from Earth.
15 December 2025
NASA Loses Contact With Critical MAVEN Mars Orbiter: What the Sudden Silence Means for Future Missions

NASA Loses Contact With Critical MAVEN Mars Orbiter: What the Sudden Silence Means for Future Missions

NASA lost contact with the MAVEN Mars orbiter on December 6, 2025, after it slipped behind the planet during a routine orbit. The spacecraft, in service since 2014, has not responded to repeated attempts to re-establish communication. As of December 11, engineers are still investigating the cause and have not regained contact. MAVEN remains officially classed as lost-signal.
11 December 2025
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Interstellar Comet 3I/ATLAS Lights Up December Skies: X‑Ray Glow, Life‑Building Molecules and How to Watch the December 19 Flyby

Interstellar Comet 3I/ATLAS Lights Up December Skies: X‑Ray Glow, Life‑Building Molecules and How to Watch the December 19 Flyby

Astronomers have detected X-rays from interstellar comet 3I/ATLAS for the first time, days before its closest approach to Earth on December 19 at 1.8 AU. Hubble and ESA JUICE captured images showing twin tails, while Mars-based observatories joined the campaign. Chemical analysis revealed organic molecules. Headlines speculating about chemical weapons and alien probes have circulated alongside scientific reports.
11 December 2025
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