The sun has become more and more active over the last 16 years, in a turn that surprised scientists and could affect space ...

The Trump administration issued an executive order last month that quietly declared that NASA will now function as an ...

At the end of the last solar cycle in 2019, the official predictions were that the next cycle would be just as mild as its ...

Spacecraft have used a plutonium isotope to stay afloat for decades, but another isotope could last even longer.

President Trump and his new interim head of NASA Sean Duffy are pushing for a renewed effort to shuffle off the responsibility of running the International Space Station in favor of becoming a ...

Four astronauts splash down off the Southern California coast after a five-month stay at the International Space Station. A NASA crew hadn't returned in the Pacific since 1975.

Has NASA's Perseverance rover at long last found evidence that life did indeed once exist on Mars? Here's what we know.

“There is no evidence of microbes on Mars today, but if any had been present on ancient Mars, they too might have reduced ...

Acting NASA Administrator Sean Duffy and Nicky Fox, head of NASA's Science Mission Directorate, discuss the paper published ...

Spots on rocks on Mars offer the “clearest evidence” yet that ancient life once thrived on the Red Planet, Nasa has said.

Donald Trump is our planet's number one obstacle to following up on NASA's blockbuster findings about life on Mars.