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Cassiopeia the Queen is overhead on autumn evenings
Spot the constellation Cassiopeia the Queen somewhere in the northern sky during much of the year, throughout much of the night. It's high overhead now.
October 16, 2026
Planetary systems fall into 2 distinct families, astronomers say
Astronomers studying planetary systems in the Milky Way have found they can be sorted into 2 families. These families are largely determined by the host star.
October 15, 2026
What star in the northeast flashes colorfully? It’s Capella!
If you're in Earth's Northern Hemisphere and see a bright star twinkling with red, green and blue flashes low in the northeast on October evenings, it's probably Capella. See charts here!
October 15, 2026
Perseus the Hero and a Demon Star
The star name Algol comes from the Arabic for "head of the demon." Come to know this star, and point it out to your friends this Halloween.
October 15, 2026
Strange cloud! What was it? Observers in U.S. East report
Many people up before sunrise on Tuesday morning saw a strange cloud. It was the plume from a SpaceX rocket. See stunning images here!
October 14, 2026
Best deep-sky photos of September 2026 from EarthSky community
Enjoy this gallery of deep-sky photos from September 2026 by our EarthSky community. If you have a great photo to share, we'd love to see it!
October 14, 2026
Proxima Centauri is the closest star to our sun
Proxima Centauri is the nearest star to our sun at 4.22 light-years away. It's home to at least 3 planets and has massive solar flares.
October 14, 2026
NASA’s Perseverance rover on Mars sets off-world driving record
The Mars Perseverance rover has set a new distance record on Mars. It has driven 28.10 miles (45.22 km) across the surface of the red planet.
October 13, 2026
Weirdest cloud on Mars formed via ‘exotic physics’
The weirdest cloud on Mars has a funny-sounding name. Scientists call it the Arsia Mons Elongated Cloud. Come find out what's weird about it!
October 13, 2026
Meet Aquarius the Water Bearer and its stars
Aquarius lies in a “watery” part of the sky, near Pisces the Fish, Cetus the Whale, Eridanus the River and Piscis Austrinus the Southern Fish.
October 13, 2026
