The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

A NASA spacecraft has returned asteroid samples that hold not only the pristine building blocks for life but also the salty ...

All forms of Earth life have specific chemicals in their makeup, such as amino acids and sugars. Scientists have known that ...

New U.S. Postal Service stamps released last week feature images captured by NASA's James Webb Space Telescope.

The U.S. Postal Service has issued a new set of stamps celebrating the James Webb Space Telescope, the most powerful space ...

NASA said it would do that “as soon as practical.” By Kenneth Chang In a post on X on Tuesday evening, Elon Musk said President Trump had asked his rocket company SpaceX to bring home “as ...

The Priority Mail 'Spiral Galaxy' and Priority Mail Express 'Star Cluster' stamps are now available in panes of four at post ...

Planes that fly faster than the speed of sound create thunderous supersonic booms. But with NASA's X-59 plane, that could change. The space agency plans for the aircraft's first flight in 2025, an ...

NASA/AFP via Getty Images The two NASA pilots reached the International Space Station via a Starliner – Boeing’s first flight into space – but problems with the capsule quickly developed ...

Artificial-intelligence tools are starting to allow nonexperts to search for patterns across the globe ...

Hopefully, all will be safe. Good luck Elon!!!” When asked for comment about the ambiguous declarations from Musk and Trump, NASA replied that it is “expeditiously working to safely return the ...