A giant comet will fly past Earth in July and you might see it

A comet first spotted in the distance in 2017 may soon finally be within sight of amateur astronomers.

Comet C/2017 K2 (PANSTARRS), or K2 for short, was then the most distant active comet ever discovered, a title it recently relinquished to megacomet comet Bernardinelli-Bernstein discovered last year . But even with a superlative, K2 is remarkable for activity. The comet began spewing out gas and dust in the far outer Solar System, while it is more typical for comets to wake up much closer to Jupiter’s orbit in the interior.