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Heightened volcanic activity in the Nevados de Chillán prompted Chilean authorities to issue an orange alert in anticipation of an eruption. See photos and videos from our friends at GlacierHub.
Life on Ceres, largest body in the asteroid belt? Maybe, at one time. New research points to ancient subsurface reservoirs of salty meltwater that might have lasted millions of years and let life's chemistry begin. Read more.
If there were no leap years, eventually February would be a summer month for the Northern Hemisphere. 2019 isn't a leap year, but 2020 will be. Read more.
Look for the waning moon sandwiched between Jupiter and Saturn Friday morning. By this weekend, a very thin crescent will be passing Venus. East before sunup!
Do you see the dragon in this green aurora that appeared over Iceland earlier this month? It's an example of what's called pareidolia. Photo by Jingyi Zhang and Wang Zheng.
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