A newly discovered celestial object may be a starless cloud that could change how astronomers understand dark matter.

Now, a new Nature study points to an answer by catching four planets at a stage most systems never show us: The awkward, ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

"We're going to do it in three years, and we're going to do it for a ridiculously low price," Pete Klupar, executive director ...

They're called ghost particles for a reason. They're everywhere—trillions of them constantly stream through everything: our ...

Across the Milky Way, planets slightly larger than Earth but smaller than Neptune appear around most stars. Yet our own solar ...