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Space
The Artemis Accords are rules for a new moon era
The Artemis Accords are a set of guidelines for peaceful space exploration. But questions remain about who makes the rules and controls space resources.
September 25, 2026
Astronomy Essentials
Neptune at opposition on September 26, 2026
Neptune at opposition -- when it's opposite the sun on the sky's dome -- comes on September 26, 2026. You'll need optical aid to spot it.
September 25, 2026
Human World
Space
Is there enough water on the moon for future cities?
Is there enough water on the moon for future cities? New estimates say there could be enough for smaller villages or towns, but not larger metropolises.
September 25, 2026
Astronomy Essentials
Seeing Saturn’s rings: Top tips for beginners
If you want to see Saturn's rings, late September and early October 2026 is a great time to look. Grab a telescope and read the tips found here!
September 25, 2026
Sun
Sun news: Fast wind arrives, auroras up north
Sun news September 25, 2026: Fast solar wind arrived, stirring Kp 4 and high-latitude auroras. Meanwhile, AR4536 just grew a delta. Stay tuned!
September 25, 2026
Today's Image
The red planet shows strange swirls of purple and pink
Mars Express captured this view of the red planet showing it in less familiar purple, pink and blue shades. Read why the red planet looks purplish.
September 24, 2026
Space
Curiosity rover insights after 5000+ sols on Mars
Curiosity rover has now spent 5,000 sols — the equivalent to 5,000 Martian days, or more than 14 years — on Mars. Here's a look at some of its discoveries.
September 24, 2026
Earth
Would a Yellowstone supervolcano eruption end humanity now?
Yellowstone has undergone 3 massive super-eruptions in the past. If the Yellowstone supervolcano erupted today, would humanity survive?
September 24, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for September and October
Visible planets and night sky guide: Watch for the Harvest Moon this weekend. And see a video here about Harvest Moon science and folklore.
September 24, 2026
Astronomy Essentials
Full moon names by the month and by the season
Lists of common full moon names — both by month and by season — for North America. And a word about full moon names in the Southern Hemisphere.
September 24, 2026
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