EarthSky19- Page

That small moving dot is our new interstellar visitor, Comet 3I/ATLAS. A new study said it might be 7 billion years old, or 3 billion years older than our own

Artist’s concept of an overhead view of the Milky Way galaxy. New modeling and simulations show our galaxy should have about 80 to 100 more satellite galaxies than we’ve found

Plumes of ejecta stream from the little asteroid moon Dimorphos, after NASA’s DART mission spacecraft intentionally struck it on September 26, 2022. It was the world’s 1st planetary defense test. Image

An artist’s impression of the UK-led CosmoCube spacecraft. Its mission would be to listen for an ancient whisper from the cosmic Dark Ages on the far side of the moon.

Artist’s illustration of a super-Earth exoplanet close to its red dwarf star. A new study showed that small planets with masses similar to Earth are especially common around red dwarf

Airport radar around the world leak electromagnetic energy into space, signaling our location on Earth up to 200 light-years away. This is Narita International Airport in Japan. Image via Nickika

Astronomers say Earth could be located in a billion-light-year-wide void, illustrated here by the green dot. If so, matter would flow away from us due to stronger gravity from the

This spectacular spiral galaxy is Messier 83, also known as the Southern Pinwheel. New research on this galaxy may help explain how galaxies are able to sustain star formation over

Mario Rana in Virginia captured this frame of Saturn at 5:07:56 a.m. EDT (9:07:56 UTC) on July 5, 2025. See that bright flash on the limb indicated by the blue