NASA's leaders say an overly aggressive timeline from the Trump administration and a legal fight over a contract are two reasons why it's altering plans for the Artemis lunar program.

NASA's Juno spacecraft sweeps over Jupiter's Great Red Spot and makes a 3D map of the giant storm. The findings could shed light on gas giant exoplanets in distant solar systems.

NASA astronaut Megan McArthur called the situation "sub-optimal," but says the crew's four astronauts are "prepared to deal with it." They will return home after spending nearly 200 days in space.

NPR's Scott Simon contemplates the growing dining options for astronauts aboard the space station, including tacos, chile and even lobster.

NASA should work toward a new space telescope that could view small planets around distant stars with the potential to host life, expert panel says

It's NASA's first time growing peppers in space. And after they were harvested, NASA astronauts got to sample the crop sprinkled on tacos at the International Space Station.

A scientific discovery about extraterrestrial life can provide new insight, but it can be misunderstood or exaggerated into something else when it reaches the public. NASA is hoping to change that.

A solar flare eruption from earlier this week is expected to reach Earth on Saturday and Sunday, creating the potential for the aurora borealis to be visible across large parts of the U.S.

A mysterious signal that appeared to be emanating from Proxima Centauri put scientists on a hunt to track down its source. What they found was that it had a decidedly earthbound origin.

For every U.S. mission with NASA astronauts, a family from Texas has sent a bouquet of roses to NASA's Mission Control Center to show support to those who keep the astronauts safe.

Astrophysicist Erika Hamden spent 10 years building FIREBall, a telescope that reaches the stratosphere and looks for clues to how stars form. Launching it was more challenging than she ever imagined.

Scientists who want to understand what's beyond our solar system have designed an interstellar spacecraft that could go out farther and faster than the famous Voyager probes.

By the end of the 2020s, Blue Origin says its planned Orbital Reef commercial space station will become "the premier mixed-use space station in low Earth orbit for commerce, research, and tourism."

Two microphones aboard the Perseverance Rover make it possible to listen in on the Red Planet. They've captured nearly five hours of sounds, including the Martian wind.

The U.S. and China are rushing to develop hypersonic weapons. Critics worry it's turning into a race without end.