A decade ago, scientists at the European Space Agency (ESA) had just wrapped up the yearslong process of building a ...
Mysterious, city-size 'centaur' comet gets 300 times brighter after quadruple cold-volcanic eruption
The cryovolcanic "centaur" comet 29P/Schwassmann-Wachmann has erupted four times in less than 48 hours, becoming unusually ...
Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...
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