The habitable zone is where liquid water can exist. Teegarden's Star's star is only 12.5 light-years from Earth. Astronomers have discovered 2 new Earth-sized exoplanets orbiting in this nearby habitable zone.

DART stands for Double Asteroid Redirection Test. The DART mission is planned for launch in 2021. It'll visit a double asteroid - Didymos and its tiny moon - and crash into the moon in an attempt to change its orbit.

Following NASA's DART mission, if all goes as planned, an European Space Agency mission called Hera will also visit Didymos and its moon, to gather vital, detailed information. Watch a video, where astrophysicist and Queen guitarist Brian May explains more.

Want to spend your days looking at awesome photos of distant galaxy clusters, and possibly discovering an asteroid? Check out this new citizen-science project called Hubble Asteroid Hunter.

Scientists have been trying to figure out how clouds form in Mars' thin atmosphere, and thanks to new research, the answer seems to be ... meteors.

Textures and patterns, from clumpy to straw-like, pop out of these images from the Cassini mission. "It’s like turning the power up a notch on what we could see in the rings," said a scientist.

Last week, the Mars Curiosity rover detected its largest-yet measurement of methane. It's exciting because microbial life is an important methane source on Earth (though methane can also be created in other ways).

Asteroid 2019 MO exploded in our atmosphere with an energy of about 3 to 5 kilotons of TNT. Such events happen once or twice yearly, astronomers say. Most are unexpected, but this space rock was detected hours before it struck.

Europa has an ocean, hidden beneath its icy crust. The discovery of sodium chloride - aka table salt - on the moon's surface might be strong evidence that Europa's ocean is very similar to Earth's.

A new study suggests that many exoplanets - worlds orbiting distant stars - might have an overabundance of toxic gases in their atmospheres. If so, that would make the evolution of complex life forms more difficult.