An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse ...

Consisting of 99% air, aerogel is the world's lightest solid. This unique material has found purpose in several forms—from ...

Astronauts aboard the space station have a unique view of Earth, and a time-lapse by NASA's Jonny Kim shows off its beauty.

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...