Astronomers once gazed at the night sky and charted the stars using their naked eyes. Astrophysicist Emily Levesque describes how generations of telescopes have unlocked the wonders of the universe.

NASA is counting down to what should be the final major test of the massive rocket it is building to put the first woman and the next man on the moon.

Members of NASA's Perseverance rover team, in collaboration with the Navajo Nation, have been naming features of scientific interest with words in the Navajo language.

The two countries' space agencies say the proposal, which sets no time frame, could include an orbiting station, a base on the surface, or both.

Allan McDonald, who directed the booster rocket project at NASA contractor Morton Thiokol, urged delaying the launch of the space shuttle before it exploded in 1986. He has died at age 83.

The NASA rover traversed some 21 feet of terrain this week, in its first test drive since landing on the red planet. It also captured photos of its touchdown site and the wheel tracks it left behind.

Swati Mohan was the Guidance and Controls Operations Lead on the NASA Mars 2020 Mission, which successfully landed the newest Mars Rover, Perseverance, on February 18.

Nuclear rocket technology might be the fastest, safest way to get to the red planet. But if NASA wants to go, it should start development now.

NASA released new video showing the Mars rover Perseverance's landing and touchdown on the Red Planet as well as other images it has transmitted back to Earth. 

Physician assistant and pediatric bone cancer survivor Hayley Arceneaux, 29, will be one of four crew members on the world's first all-civilian mission to space at the end of this year.

The supply ship is named for Katherine Johnson, a Black NASA mathematician portrayed in the 2016 film. It's bringing some 8,000 pounds supplies and hardware to the International Space Station.

Following a 300 million-mile voyage through space and a dangerous drop to the surface, Perseverance will be put through its paces before getting to a search for ancient Martian life.

Perseverance, set to land on the Red Planet on Thursday, is carrying the most sophisticated robotic biology lab ever launched and a drone meant to make the first-ever powered flight on another world.

Harvard researchers say a comet from deep space — not an asteroid from the belt past Mars — was responsible for the mass extinction. Others are skeptical.

Environmental watchdogs now can detect deforestation even when it's hidden from sight by rain and clouds. They're using data from radar on a European satellite.