Both Aerospace Corporation and ESA have updated their predictions for the fall of Tiangong-1. View China's 1st space station online, before it falls, March 28 starting at 12 UTC (7 a.m. CDT; translate to your time zone).
The Magellanic Stream - 300,000 light-years long - arches around our Milky Way. It's too faint and tenuous to study directly, so astronomers probed it by looking to distant quasars.
All 7 of the TRAPPIST-1 exoplanets are Earth-sized and terrestrial, making them an ideal focus of study for planet formation and potential habitability.
Bob Kelley captured this aurora display over Delta Junction, Alaska early Friday morning. See the angel? Seeing animals in clouds, or a face in the moon, are examples of pareidolia. Look here for more photos to test your own ability to see things that aren’t really there.
