Goodbye, comet K2!  Next stop: closest approach to the sun

Goodbye, comet K2! Next stop: closest approach to the sun

A megacomet has just passed safely close to Earth, but there’s still a chance it will get brighter throughout the summer as it reaches its closest approach to the sun in December.

Comet C/2017 K2 (PANSTARRS), known as K2 for short, made its closest approach to our planet on Thursday July 14. It passed 168 million miles (270 million kilometers) from Earth (beyond the orbit of Mars).

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