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Space
Comet Lemmon might be the best comet of 2025
We're getting many beautiful images of Comet Lemmon. It could become bright enough to see with your eye alone in late October and early November.
October 5, 2025
Space
New Tumbleweed rovers could transform Mars exploration
Researchers in Europe have successfully tested prototypes of proposed Tumbleweed rovers. The lightweight spherical rovers would use wind to move around on Mars.
October 5, 2025
Astronomy Essentials
The Super Harvest Moon overnight on October 6-7
In 2025, look for the October full moon - the Harvest Moon - on October 6. It's the first of four supermoons in a row.
October 5, 2025
Earth
Sun
Sun news: Fast solar wind eases as sun quiets down
Sun news for October 5, 2025: The sun has quieted down after a week of strong solar winds and geomagnetic storms. Flare activity is low with only C flares.
October 5, 2025
Astronomy Essentials
Tonight
Visible planets and night sky guide for October
Visible planets and night sky guide. Watch the skies for the Harvest Moon tomorrow night. It'll rise at sunset and set at sunrise. See a video here.
October 5, 2025
Astronomy Essentials
International Observe the Moon Night October 4
International Observe the Moon Night is October 4, 2025. It's a global event for celebrating the moon. Here's how you can participate online or in person.
October 4, 2025
Human World
Spaceflight
1 to 2 Starlink satellites are falling back to Earth each day
There are now 1 to 2 Starlink satellites falling back to Earth each day, burning up in the atmosphere with consequences not fully understood.
October 3, 2025
Space
Interstellar object 3I/ATLAS passed Mars last night
Interstellar object 3I/ATLAS swept closest to Mars at 11 p.m. CDT on October 2 (4 UTC on October 3). Read about plans to observe it with spacecraft.
October 3, 2025
Space
Moon-forming disk found around massive planet
Data from the Webb space telescope reveal that a massive planet around a distant star is encircled by a moon-forming disk.
October 3, 2025
Space
Rogue planet found growing at astonishing record rate
Astronomers have discovered a rogue planet eating up 6 billion tons of gas and dust every second. That's the fastest rate ever recorded for any planet.
October 2, 2025
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