The Hubble Space Telescope has been hit with computer trouble, with all astronomical viewing halted, NASA said Wednesday. The orbiting observatory has been idle since Sunday when a 1980s-era computer that controls the science instruments shut down, possibly because of a bad memory board.

NASA is troubleshooting a memory problem that put the telescope's instruments into safe mode and slowed its science roll. The Hubble Space Telescope has spent over three decades scanning the cosmos, bringing us glorious images and data from our universe. The spacecraft is showing its age. The Hubble team is now troubleshooting a problem with the telescope's payload computer -- a piece of hardware built in the 1980s -- that controls its science instruments.

NASA’s James Webb Space Telescope, originally proposed in the 1990s, is finally slated to launch later this year: at the end of October, 2021. In many ways, it’s the successor telescope to Hubble, capable of showing us the Universe beyond our current limits. Not only will James Webb be the largest telescope ever sent to space, capable of gathering more light and achieving superior resolution compared with any prior space-based observatory, but it will be specialized for near-infrared and mid-infrared wavelengths, allowing it to peer through the gas and dust that obscures the views of our other cutting-edge telescopes.

Every billionaire needs something to spend their fortunes on. For Howard Hughes, it was the Spruce Goose; for Roman Abramovich, it’s Chelsea FC. And for the current crop of tech moguls, it’s space. Jeff Bezos has led the charge. He founded his company, Blue Origin, in 2000, after a conversation with his friend, the science fiction author Neal Stephenson. And in July, 21 years later, the investment will pay off...

If you want to explore the outer solar system, you need plutonium. Deep inside some of NASA's most venerable space probes lie plutonium-filled hearts beating to warm and power the robots, which include the twin Voyager spacecraft, Cassini before its daring plunge through Saturn's rings and New Horizons trekking through the rubble of the Kuiper Belt.

SpaceX launched thousands of tiny sea creatures to the International Space Station on Thursday, along with a plaque-fighting toothpaste experiment and powerful solar panels. The 7,300-pound (3,300-kilogram) shipment — which also includes fresh lemons, onions, avocados and cherry tomatoes for the station’s seven astronauts — should arrive Saturday.

As part of last week's federal budget rollout, a process during which the White House proposes funding levels for fiscal year 2022, the US Air Force released its "justification book" to compare its current request to past budget data. The 462-page book contains a lot of information about how the Air Force spends its approximately $200 billion budget.

For months, NASA had strongly suggested that it would select two companies for the next phase of its Human Landing System (HLS) program. Just as with the commercial cargo and crew programs, agency officials said, having two companies develop and demonstrate lunar landers would provide redundancy and ensure NASA was getting the best deal.

The platform is intended to be used as a launch and landing platform for the SpaceX Starship, a spacecraft that Musk intends to send to Mars.

An automated spacecraft docked with China's new space station Sunday carrying fuel and supplies for its future crew, the Chinese space agency announced.

In the coming decades, governments and private companies will set up permanent bases on the Moon and Mars. And at some point, the first galactic baby will be born.

It appears that China will be one of the first challenges for NASA's new leaders. Former astronaut Pam Melroy received questions about China's space activities during a Senate hearing Thursday (May 20) to consider her nomination as NASA deputy administrator. The livestreamed hearing took place less than a day after her potential future boss, NASA Administrator Bill Nelson, pledged action on China during his first congressional hearing as agency head.

Last month, experts from NASA and other space agencies around the world faced a troubling hypothetical scenario: A mysterious asteroid had just been discovered 35 million miles away, and it was heading for Earth. The space rock was expected to hit in six months.

Low Earth orbit is reaching capacity as tech companies such as SpaceX, OneWeb and Amazon race to industrialize space with satellites, and in response, physicists are attempting to lay out safe and affordable options for expanding the market into medium Earth orbit, a much riskier arena.

NASA and Houston-based Axiom Space have signed a "mission order" setting the stage for four civilians to visit the International Space Station early next year, the first fully commercial flight to the orbiting lab complex, agency managers said Monday.

Bezos tried to hire Gwynne Shotwell to run Blue Origin in 2016. By as early as the fall of 2016, Amazon founder Jeff Bezos had already started to worry deeply about the progress—or lack thereof—being made by his rocket company, Blue Origin.

Less than six months after high-altitude flight testing began, SpaceX has successfully landed a full-size Starship prototype in one piece, giving the company its first real opportunity to inspect a flown vehicle with flaps, a nose, and three Raptor engines.

Space agencies are tracking the path of an out-of-control rocket as it hurtles towards Earth. Here's what we do – and don't – know about this piece of space junk.

Space agencies participated in a weeklong NASA exercise in which they tried — and failed — to stop a fictitious asteroid from hitting Europe.

The four astronauts of SpaceX's first full mission to the International Space Station (ISS) have splashed back down to Earth off the coast of Florida. It is the first US splashdown under the cover of darkness since NASA's Apollo 8 returned from the moon in 1968.