Water vapor, and likely clouds that rain liquid water, have been discovered on an exoplanet that lies in the habitable zone of its star. But there's an issue.

This weekend you can see live telescope views of an asteroid hurtling past Earth, thanks to astronomy broadcaster Slooh.

Astronomers have taken the first color photo of a potentially interstellar comet, and it looks spectacular.

A full moon on Friday the 13th is spooky enough, but hold on to your black cats. September's full moon will also be a "micromoon."

Astronomers have discovered a bright, young star that is running away from home. Why?

It's always nice to see old friends, and NASA's asteroid-monitoring team has a busy schedule this weekend (Sept. 13 and 14) doing just that.

By spying on star clusters in a nearby galaxy, the Hubble Space Telescope has shown that star clusters aren't always as old as they appear.

Two huge bubbles of radio energy swirling out of the Milky Way's middle could be evidence of an ancient cosmic explosion — or maybe the start of a new one.

At first, it was just another bright, fuzzy speck in the sky. But it may turn out to be something much more exciting: the second known object to hurtle through our solar system after leaving another system.

The volcanic atmosphere may be all the moon needs.

NASA's repurposed spy telescope is ready for the next stage of development.

NASA is hard at work getting its new, moon-bound rocket and spacecraft ready for Artemis 1, the next mission of the agency's program, which aims to eventually land humans on the lunar surface.

A pulsar 25,000 light-years away is wobbling in a weird way. But Einstein's theory of general relativity predicted it more than a century ago.

In a major first, scientists have detected water vapor and possibly even liquid water clouds that rain in the atmosphere of a strange exoplanet that lies in the habitable zone of its host star about 110

Interstellar flight is a real pain in the neck.

Japan called off a planned cargo ship launch to the International Space Station today (Sept. 10) after a fire erupted on the launch platform for the mission's rocket, according to press reports.

Europe's rocket-launching industry is gearing up to go reusable.

Liftoff is at 5:33 p.m. EDT (2133 GMT).

The birthplace of two meteorites from Mars was apparently a zone with two craters: new findings that scientists might use to unlock secrets on the Red Planet.

Three asteroids are expected to hurtle past Earth today (Sept. 9). One will pass as near as 310,000 miles (500,000 kilometers) — closer than any potential asteroid near-miss for the next three months.