The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...
Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...
According to the NOAA space weather forecasters, geomagnetic activity is ramping up just enough to make aurora viewing ...
Signs of impending doom are all around, especially as a potential time change for the "Doomsday Clock" looming. See other signs of impending doom.
NPR's Ailsa Chang speaks to astronomer Sarah Greenstreet about her team's new discovery of the fastest-spinning large asteroid known to man.
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