This is the strongest evidence yet of a rocky planet beyond our solar system with an atmosphere. Astronomers using the James ...

Researchers using NASA's James Webb Space Telescope have detected the strongest evidence yet for an atmosphere on a rocky ...

When they first spotted it, the mysterious interstellar comet was travelling at about 137,000 miles per hour. After getting pulled by Sun’s gravity, in October, it sped up at 153,000 miles per hour.

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

With J.R.R. Tolkien's high-fantasy world of Middle-earth being so far removed from our own, it's easy to get so caught up in what's on the map itself that we rarely even think about what's not on it.

With major eclipses, brilliant supermoons, and lineups of five or more planets, 2026 offers something awe-inspiring in every season. Here’s what to watch for.

Interstellar comet 3I/ATLAS is making its closest approach to Earth this month, captivating astronomers with its otherworldly ...

The Earth's tail is known as the "magnetotail". Though it is generally a permanent feature, it is at the whims of the solar ...

Interstellar Comet 3I/ATLAS is nearing Earth. Hubble and Juice captured new images, revealing an alien object with a strange ...

The waning moon shines close to the king of the planets on Dec. 7. Don't miss Jupiter shining close to the waning gibbous ...

SPHERE’s detailed images of dusty rings around young stars offer a rare glimpse into the hidden machinery of planet formation ...