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4 ways to track 3I/ATLAS without a telescope as it makes its closest approach to Earth tonight
Interstellar visitor 3I/ATLAS is travelling away from the sun on its way back to interstellar space.
Blue Origin scrubs space tourist rocket launch with first wheelchair user due to last minute 'observation'
Aerospace engineer Michi Benthaus will become the first wheelchair user ever to reach space today (Dec. 18), and you can watch her historic launch atop a Blue Origin rocket live.
Latest Comet 3I/ATLAS news: One day until the comet is closest to Earth!
Thursday, Dec. 18, 2025: Your daily feed for the holiday flyby of interstellar comet 3I/ATLAS by Earth.
'Crash Clock' reveals how soon satellite collisions would occur after a severe solar storm — and it's pretty scary
Satellites would likely begin colliding with each other or space junk in less than three days if they were to lose the ability to maneuver, for example due to an intense solar storm.
Scientists detect X-ray glow from interstellar comet 3I/ATLAS extending 250,000 miles into space
A rare interstellar comet has been caught in X-rays by two space telescopes, revealing how its gases interact with charged particles from the sun as it travels through the inner solar system.
Will 2026 bring strong auroras? What the sun's recent activity tells us
2025 was another busy year on the sun. But how did it compare with 2024, and what will 2026 bring for solar activity and the northern lights?
On this day in space! Dec. 18, 1999: NASA launches Terra Earth-observing satellite
On Dec. 18, 1999, NASA launched its flagship Terra satellite into Earth's orbit to collect data about Earth's changing climate.
As above, so below: Earth in the sky | Space photo of the day for Dec. 18, 2025
This 3D rendering of our planet was part of France's Festival of Lights celebration.
