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

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.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Our solar system has been around for 4.6 billion years. While that sounds like a long time, it's ...

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, ...