Jupiter appears to have more water than anyone expected.

The search for present-day life on Mars is heating up. And for good reason: An improved knowledge of Mars' geologic diversity and history, a better appreciation of life in extreme environments here on Earth, and a sharp focus on sensitive life-detection measurement methods are all bolstering the Mars-life hunt, giving scientists more reason to think that they just might find something.

NASA just announced the four finalists for its next round of low-cost planetary-exploration missions.

After much anticipation and an unexpected two-day delay, NASA and the European Space Agency's (ESA) Solar Orbiter finally launched on Sunday, February 9 at 11:03 p.m. Eastern. Footage captured by NASA and the ESA reveal the spacecraft's fittingly spectacular send-off into deep space.

Apotentially hazardous asteroid that’s big enough to trigger a nuclear winter and mass extinction events on Earth following a collision will intersect the planet’s path this weekend. According to the data collected by NASA, the approaching asteroid is larger than the tallest man-made structure in the world.

NASA Glenn Research Center has just reinvented the wheel, introducing a new tire that can get back to its original shape after having undergone deformation. This invention was possible thanks to a shape memory alloy based on nickel-titanium.

The European Space Agency (ESA) is celebrating a technical achievement. For the very first time, one of its deep space antennas has simultaneously sent a series of commands to two spacecraft orbiting Mars. The antenna sent parallel transmissions to the agency’s Mars Express orbiter, which snaps pictures of the Red Planet, and its ExoMars Trace Gas Orbiter, which analyzes gas signatures on Mars.

The quest to explore Mars and more distant worlds is more than an engineering challenge: it’s a challenge to the human mind

NASA has announced four projects as part of its Discovery Program, which sees the space agency asking scientists to pitch focused, relatively low-cost missions for it to take on and develop into full-fledged missions. "Although they're not official missions yet and some ultimately may not be chosen to move forward, the selections focus on compelling targets and science that are not covered by NASA's active missions or recent selections," NASA writes on its website.

NASA is at a critical juncture in its push to get people back to the moon by 2024, with key decisions expected within weeks. This effort to meet an ambitious deadline set by the Trump administration last year faces widespread skepticism in the aerospace community, even as the new head of human spaceflight at NASA insists that it can succeed.

President Donald Trump is set to request a budget of $25.6 billion for NASA for its fiscal 2021 operating year, the Wall Street Journal reported on Friday. It’s looking for nearly $3 billion more than the $22.6 billion NASA had for its current fiscal year, and the bulk of the new funding is said to be earmarked for development of new human lunar landers.

Thanks to some (very) remote engineering work by NASA, the intrepid explorer's science mission is back on.

NASA warned that a massive potentially hazardous asteroid bigger than the Empire State Building is currently headed for Earth. If this space rock hits the planet, the blast would be powerful enough to wipe out an entire major city.

The interior of Saturn's moon Enceladus is geochemically complex, making its subsurface ocean quite habitable for possible life, according to a new study from Southwest Research Institute.

Crew Dragon may get off the ground in early May.

"Right now, traditional habitat designs for Mars are like a turtle — carrying our homes with us on our backs — a reliable plan, but with huge energy costs."

Nearly one month ago, Boeing completed the first orbital test flight of its Starliner spacecraft with a near-perfect landing at White Sands Space Harbor in New Mexico. The mission had to be cut short due to a well-publicized timing error that delayed the spacecraft's service module from performing an orbital insertion burn. This caused the thrusters on board the service module, which provides power to Starliner during most of its mission, to fire longer than expected.

Can a Mars rover have an existential crisis? NASA's Curiosity rover is wondering just exactly what its place is on Mars after experiencing a technical glitch. "Partway through its last set of activities, Curiosity lost its orientation," wrote Curiosity team member Dawn Sumner, a planetary geologist at University of California, Davis, in a mission update this week.

The first flight of NASA's Space Launch System (SLS) megarocket and Orion crew capsule — and the first big step in putting astronauts back on the moon — was originally scheduled to launch this year, but the mission is now expected to slip to 2021.

NASA's bold choices to open the Apollo Program for the world to see made the Moon landing humanity's first truly viral moment. But it could have instead ended in humiliation.