Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Mercury has long been cast as the solar system’s burnout case, a small rocky world that cooled quickly and then froze in ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

The big astronomical event in February is a rare “planetary parade,” according to NASA. You’ll be able to see Mercury, Venus, ...

The solar system's two largest planets adorn the evening sky this month, while the smaller inner planets linger near the Sun and remain mostly out of sight. You'll want to make Saturn your first ...

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four massive but extremely low-density worlds orbiting the star appear to be ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

"We used to think that only very simple molecules could be created in these clouds. But we have shown that this is clearly ...