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See Jupiter and the moon join the Gemini twins in the predawn sky on Sept. 16
By Anthony Wood published
The crescent moon will shine with Jupiter among the stars of Gemini early on Sept. 16.

Are 'little red dots' seen by the James Webb Space Telescope actually elusive 'black hole stars'?
By Robert Lea published
The mystery of the James Webb Space Telescope's "little red dots" could be solved if they are not ancient galaxies but are entirely new celestial objects called "black hole stars."

Firefly Aerospace’s Alpha rocket cleared to fly again after April 29 launch failure
By Josh Dinner published
Firefly Aerospace has completed its investigation into the anomaly that caused its Alpha rocket to a plunge into the sea near Antarctica on April 29.

50 years ago, NASA sent 2 spacecraft to search for life on Mars – the Viking missions' findings are still discussed today
By Joel S. Levine published
Viking consisted of two twin orbiters and landers, with experimental chambers in the landers to conduct three biology experiments.

The moon and Venus visit the 'Heart of the Lion' this week. Here's how to see it
By Joe Rao published
A striking sight to the unaided eye; even more so with binoculars.

On this day in space! Sept. 15, 1968: Russian tortoises take 1st circumlunar spaceflight
By Hanneke Weitering last updated
On Sept. 15, 1968, the Soviet Union launched the Zond 5 spacecraft on a mission to loop around the moon and return to Earth.

These 2 European telescopes use lasers to track potentially dangerous space junk (video)
By Keith Cooper published
The laser system provides real-time positional data on the huge cloud of space debris above our heads in low Earth orbit.

Rocket launch today: Is there a rocket launch and what time?
By Josh Dinner, Tariq Malik last updated
Follow Space.com's rocket launch blog for the latest on when the next rocket launch will be and how to follow it live.

Interstellar comet 3I ATLAS glows green during lunar eclipse | Space photo of the day for Sept. 15, 2025
By Kenna Hughes-Castleberry published
During September's total lunar eclipse, astronomers captured rare images of interstellar comet 3I/ATLAS glowing green, suggesting more about its chemistry.
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