After 268 days aboard the International Space Station (ISS), NASA astronauts Butch Wilmore and Suni Williams made their ...

Deimos is the smaller and less photographed of Mars’ moons. This egg-shaped object, only measuring about 7.7 miles in ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

SpaceX’s Dragon Freedom capsule safely splashed down in the Gulf of Mexico on Tuesday evening, bringing astronauts Barry ...

M17, often called the Omega, the Swan, and the Checkmark Nebula, stars in a new image taken by the VISTA telescope in Chile.

How do we power missions in the outer reaches of our solar system and beyond? The solution, developed in the '60s, can last ...

The FAA has released a draft environmental assessment evaluating the impact of increasing launches from 50 to 120 per year.

Astronomy contributor and lunar expert Robert Reeves looks back on a Texas-sized achievement in Moon exploration.

Researchers worry an “extinction-level event” is coming for space science as the Trump administration looks to slash spending ...

The Pleiades, Ptolemy's Cluster, the Large Magellanic Cloud — here's how to center the sky's brightest deep-sky wonders in ...

Pictures may enliven us, but other data, such as information about magnetic fields, add a huge amount to our understanding of ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.