Watch the Sept. 21 partial solar eclipse live online with this handy livestream. Coverage begins at 2 p.m. EDT (1800 GMT).

The Oct. 2 partial solar eclipse, known as an annular or "ring of fire" eclipse, is about to begin over Easter Island and South America. Watch it for free right here ... Sign up for the Live Science ...

SpaceX is scheduled to launch NASA’s Interstellar Mapping and Acceleration Probe (IMAP) mission at 7:30 a.m. ET on Wednesday, from Launch Complex 39A at Kennedy Space Center.

Did you know our entire Solar System is cocooned inside a giant protective bubble, known as the heliosphere? Created by the perpetual outflow of charged particles from the Sun, called the solar wind, ...