Rahul Rao

Astronomers have discovered a quartet of teenage planets, according to data from NASA's TESS telescope.

The new European-American ocean monitoring satellite Sentinel 6 Michael Freilich has started delivering precise sea-level rise data after six months of technical calibrations.

Radiation exposure limits on how long astronauts can stay up in orbit. But that cap isn't equal for all astronauts, and experts are now backing NASA's effort to change it.

The "active galactic nucleus" phase of the supermassive black hole at the heart of the galaxy Arp 187 has apparently just ended.

Astronomers may not know what dark matter is, but they do know that galaxies are supposed to contain a lot of the shadowy, invisible substance.

Behind the scenes, NASA's Artemis program relies on Commercial Lunar Payload Services partners to deliver science equipment to the moon.

So far, only the U.S., the Soviet Union/Russia and China have launched humans to Earth orbit. But India aims to join that exclusive club in the next year or two.

NASA selected Firefly Aerospace to deliver 10 scientific experiments and technology demonstrations to the moon in 2023.

Voyager 1 continues to make discoveries, most recently catching the signature of interstellar space itself, a faint plasma "hum" scientists compared to gentle rain.

To get to Mars cheaper and faster to save time and open up new mission windows, scientists say there's an easy shortcut: fly by Venus on the way.