On December 16, Comet Wirtanen will swing by Earth, closer to us than it's ever been in the last 400 years. Learn more >> https://t.co/lKQMF4VJn6 pic.twitter.com/uvdHW8v5o9 — NASA Marshall (@NASA_Marshall) December 7, 2018
On December 16, Comet Wirtanen will swing by Earth, closer to us than it's ever been in the last 400 years. Learn more >> https://t.co/lKQMF4VJn6 pic.twitter.com/uvdHW8v5o9