The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

The results of Hera's flyby could ultimately tell us whether Deimos is a captured asteroid or made from debris from a giant ...

"As soon as we can get it going, we would want to start having some type of presence on the moon sustainably," she told ...

The Hera probe has swung around Mars, using the planet’s gravitational pull to fling itself toward its asteroid target.

The Red Planet and its tiny moon Deimos were recorded at a very near distance as the asteroid-chasing spacecraft completed a ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of ...

A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.

On the way to investigate the scene of a historic asteroid collision, a European spacecraft swung by Mars and captured rare ...

What's on and in a star? What happens in an active galactic nucleus? Answering those questions is the goal of a proposed giant interferometer on the moon. It's called the Artemis-enabled Stellar ...