Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Proximity to a supermassive black hole doesn’t spell doom
Scientists found that stars in the "S-cluster," a group of young, high-velocity stars orbiting our galaxy's central supermassive black hole, have stable orbits.
December 4, 2025
Mercury’s sodium tail is now appearing in special filters
On December 3, 2025, Steven Bellavia imaged Mercury's sodium tail flowing away from the sun. See the image here and read more about Mercury's tail.
December 4, 2025
The Nancy Grace Roman Space Telescope is now complete!
The Nancy Grace Roman Space Telescope is now complete! The infrared space telescope could launch as early as fall 2026. Read more about it here.
December 4, 2025
Did we just see dark matter? Scientists express skepticism
A bold new study claims to have made the 1st ever direct detection of dark matter, but scientists are expressing skepticism.
December 3, 2025
EarthSky’s lunar calendar: How to use this great gift!
Follow the moon! Here’s why you need an EarthSky lunar calendar, the top tips for using it and where you can order one.
December 3, 2025
Does a supermoon have a super effect on us?
The extra pull of gravity from a supermoon creates higher-than-usual tides. But the effects of a supermoon on a human body are imperceptible.
December 1, 2025
Planisphere: Your friend to find stars and constellations
A planisphere is an easy-to-use tool that can help you learn the night sky. Align the date and time to see what constellations and stars are overhead.
November 28, 2025
Tally of near-Earth asteroids passes 40,000
Astronomers announced in November 2025 they've now discovered over 40,000 near-Earth asteroids. What risks do these pose to Earth?
November 27, 2025
Before their big smashup, Theia and Earth were neighbors
A new study suggests that Theia and Earth were neighbors in the early solar system about 4.5 billion years ago. Then their epic collision destroyed young Theia.
November 26, 2025
OSIRIS-APEX mission to asteroid Apophis soars past Earth
NASA's OSIRIS-REx mission to asteroid Bennu was a great success. Now, the spacecraft has been renamed OSIRIS-APEX and is heading to asteroid Apophis.
November 26, 2025
