The comet known as 21P/Giacobini-Zinner (21P for short) is currently flying towards the inner Solar System at speeds of more than 51,000 miles per hour. On September 10, it is set to make its closest ...

COMET 21P has lit up in the night skies with an ominous green glow as it hastily approaches planet Earth. The giant space rock dubbed Comet 21P/Giacobini-Zinner has been becoming increasingly easier ...

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Focus your telescopes on the night skies this September and you just might spot Comet 21P Giacobini–Zinner on its journey around the Sun. The unusual green comet was spotted rushing through deep space ...