On Sept. 18, a gamma-ray detector aboard NASA’s Neil Gehrels Swift Observatory began picking up flashes of the highest-energy ...

NASA’s Neil Gehrels Swift Observatory is approaching the end of its remarkable journey in space, but it is still revealing ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. An Arizona startup, Katalyst Space Technologies, is undertaking a daring mission to save ...

Add Yahoo as a preferred source to see more of our stories on Google. This illustration depicts the Neil Gehrels Swift Observatory spacecraft in orbit. - NASA Goddard Space Flight Center A daring ...

NASA’s $4.3 billion Nancy Grace Roman Space Telescope, equipped with a 300-megapixel camera sighted through a refurbished spy mirror, launched Sunday from Kennedy Space Center in Florida on a mission ...

A doomed spacecraft set to plunge to Earth in weeks has shared new cosmic images. NASA’s Neil Gehrels Swift Observatory was ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of NASA's Neil Gehrels Swift Observatory, which is losing altitude and in danger of reentering Earth's atmosphere.

At launch, the fully fueled Roman observatory weighed 20,224 pounds (9,173.5 kilograms), still a half-ton below its weight limit, a NASA spokesperson told Ars. In addition to the extra fuel, Roman’s ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A glowing supernova ...

NASA’s 22-year-old Neil Gehrels Swift Observatory is descending toward an expected atmospheric reentry later in 2026 after a ...

NASA’s Nancy Grace Roman Space Telescope, nestled inside its transport container nicknamed ‘the Chariot’, passes by the Vehicle Assembly Building on its way to the Payload Hazardous Servicing Facility ...

Australia's normally dry, rust-colored outback has erupted into a spectacular carpet of wildflowers after unusually heavy ...