Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds.

Four billion years ago, Mars’ fate was sealed deep within its core. When the planet’s once-vigorous magnetic dynamo sputtered ...

Uranus is the only planet that rotates sideways with a 98-degree tilt. Learn why Uranus spins this way, how its seasons last ...

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but ...

Something incredibly strange is unfolding in our cosmic neighborhood, a powerful and unexplained gravitational force is ...

A new survey of 500,000 stars finds only 0.28% host close-in giants, showing how aging Sun-like stars drag their planets to destruction.

Astronomers using the W. M. Keck Observatory on Mauna Kea, Hawaiʻi, have spotted such a gruesome glimpse of stellar ...

Comet 3I/ATLAS has gone from being an astronomic curiosity to the darling of the entire space science community. It is the ...

I believe extraterrestrial intelligence (in AI form) could be concealed under the lunar surface," Alex Ellery told Newsweek.

Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...

In a study published November 6 in the journal Science, researchers used space dust to make a 30,000-year timeline of ice ...

The Southern African Large Telescope (SALT) celebrates 20 years of observing the sky. SALT is the largest optical telescope ...