K2, the brightest comet in our solar system, will swing by Earth. Here's when to see it.
The bright K2 comet — previously the farthest active comet ever spotted — approaches the Earth on July 13 and 14. Here's what it is and how to see it.
The bright K2 comet — previously the farthest active comet ever spotted — approaches the Earth on July 13 and 14. Here's what it is and how to see it.