Watch the Sept. 21 partial solar eclipse live online with this handy livestream. Coverage begins at 2 p.m. EDT (1800 GMT).
Astronomers explain that the Sun looks darkened during a partial eclipse because the Moon essentially "bites" into it. The degree of darkness depends on how much of the Sun’s surface is obscured from ...
SpaceX will launch NASA's ambitious IMAP mission and two other space weather probes early Tuesday morning (Sept. 23), and you ...
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