An artist's rendering of a previous interstellar comet, ʻOumuamua, discovered in 2017.
Credit: ESA/Hubble/NASA/ESO/M. Kornmesser
The European Space Agency (ESA) says astronomers have now confirmed the discovery of only the third interstellar comet and it is due for its closest approach to Earth in October. The object—which scientists estimate is up to 20 km wide and traveling at around 60 km/sec. relative to the Sun—should...
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