A NASA astronaut captured a fascinating weather phenomenon that still has scientists scratching their heads. Nichole Ayers is ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

The newest visitor is 416 million miles from the sun, out near Jupiter, and heading this way at a blistering 37 miles per ...

NASA's newest astrophysics space telescope launched in March on a mission to create an all-sky map of the universe. Now ...

A striking 2015 satellite image has captured a rare meteorological phenomenon known as von Kármán vortices swirling off ...

A 2015 satellite photo captured a series of stunning "von Kármán vortices" swirling off Madeira and the Canary Islands. The ...

A NASA satellite captured an amazing image of the sea ice above Canada's Northwest Territories as part of its mission to ...

Researchers closely monitor the ice breakup to track how rising temperatures are impacting the Arctic and its ecosystems. The ...

HALLE, GERMANY (AP) _ Results Sunday from Terra Wortmann Open at Gerry Weber Stadium (seedings in parentheses): Kevin Krawietz and Tim Putz (1), Germany, def. Simone Bolelli and Andrea Vavassori (2), ...

A NASA satellite that went silent nearly 60 years ago has shocked scientists by suddenly firing off one of the most powerful radio pulses ever recorded, briefly outshining the entire sky.

NASA stopped using it the following year, however, and the satellite’s onboard electronics stopped working altogether by 1967, leaving the dead metal hull to orbit Earth indefinitely.

Tracing the signal revealed a surprising source: NASA's Relay 2, launched in 1964 for experimental communications and officially deactivated by 1967, after which its electronics had remained ...