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When you wish upon a star, is it already dead?
Some cynics say that when you wish upon a star, that star is already dead. But don't listen to them! The stars you can see, and your dreams, are perfectly safe.
January 2, 2025
What is the Big Bang?
In the view of modern cosmologists, the Big Bang is the event that marked the birth of our universe. What was it - when was it - and what are modern theories?
January 1, 2025
Mars starts a new year: avalanches, icy explosions and dunes
A new and explosive year began on Mars on November 14, 2024. NASA and its partners are tracking the season's strange and unique features.
December 31, 2024
Are there liquid water brines on Mars? New study casts doubt
Scientists have hypothesized how liquid water brines on Mars could occur. A new study, however, suggested it's more unlikely than previously thought.
December 29, 2024
Parker Solar Probe survived its close brush with the sun!
The Parker Solar Probe reported back after "touching the sun" on December 24. It’s in good health and operating normally.
December 27, 2024
Io’s raging volcanoes are self-powered
Does Jupiter's moon Io have a global subsurface magma ocean? A new study said no, and that Io's raging volcanoes are self-powered with their own magma pools.
December 26, 2024
Exoplanet TRAPPIST-1 b might have a hazy atmosphere
Does exoplanet TRAPPIST-1 b have an atmosphere? A new study said it either has a hazy atmosphere or is geologically active, with volcanoes or plate tectonics.
December 24, 2024
See the top 10 stories of 2024 from EarthSky
Here are the top 10 stories of 2024. We had a busy year with asteroids hitting Earth's atmosphere, dinosaur tracks, cicadas and more!
December 22, 2024
ESA’s 2025 calendar: Best of Hubble and Webb
The European Space Agency has announced its 2025 calendar, featuring the best images from Hubble and Webb from the past year. And it's free for you to download!
December 22, 2024
Moon’s largest crater is rounder than 1st thought
The South Pole-Aitken basin is the moon's largest crater. Scientists have thought it was oval-shaped, but a new study suggests it's more circular.
December 19, 2024
