A shrieking skull, a cackling witch, a scampering black widow and other cosmic illusions haunt our skies. Which do you think is the scariest nebula in the universe?
from Livescience https://ift.tt/by5jEnd
from Livescience https://ift.tt/by5jEnd
For the precocious hunter of off-Earth life, the Drake equation is the ever-ready, go-to toolkit for estimating just how (not) lonely humans are in the Milky Way galaxy. But it's not useful. from Live Science http://bit.ly/2T8L56y
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