Three teams of astronomers have been fascinated by an alien world known as K2-18b. But what's all the fuss about?
A new satellite will provide more detailed information about rising sea levels and other changes in Earth's oceans. Meet Sentinel-6/Jason-CS.
A year after New Horizons buzzed its second target, Arrokoth, a wealth of science has been revealed.
A black hole was photographed, the farthest flyby was completed, and a beloved rover was proclaimed dead. Follow us through the highs and lows of 2019 space science.
If you've been holding out hope that some Ewoks survived the apocalypse at the end of "Star Wars: Return of the Jedi," you should probably squash it.
Scientists have spotted an incredibly weird, 'impossible' white dwarf star in a discovery that suggests these objects are even more common than suspected.
On Monday, students across the U.S. will use Mercury's transit to measure the distance between Earth and the sun.
Asteroids and comets hidden in Jupiter's shadow may be in "safe mode" now, but a small change could send them flying towards Earth.
Once upon a time, a spacecraft made a dramatic quest to a distant land to bring back a treasure — and some science.
Astronaut and medical doctor Serena Auñón-Chancellor weighs in on how experiments on the ISS help medical research on Earth.
The Dream Chaser space plane continues to eye future crewed trips to the International Space Station, despite the plane's cargo focus.
The U.S. has declared its intention to once again put boots on the moon. That sort of exploration comes with a giant price tag, leaving some to wonder where the money will come from.
NASA is working with private companies to send humans back to the moon. But what happens if those companies get there first?
The elusive solar corona will be a key point of scientific studies during the July 2, 2019 total eclipse.
'Oumuamua, the first known interstellar visitor, doesn't need an extraterrestrial solution to explain its oddities, according to a new study.