Stranded NASA astronaut Sunita "Suni" Williams has followers scratching their heads over a festive new photo that shows the space travelers getting into the holiday spirit lightyears away from earth.

The koala, long an Australian icon, faces extinction. India burned mountains of trash to generate electricity. Those ...

The Parker Solar Probe has successfully completed a historic close encounter with the sun, passing through its blazing corona in mankind's nearest approach to the star, NASA announced Friday.

NASA's Parker Solar Probe flew 3.8 million miles above the sun's surface at 430,000 miles per hour, beating its own record.