A supermoon will appear in the night sky on Jan. 1 and 31, 2018. This NASA video takes a look at the science behind these amazing celestial events. McClatchy NASA
A supermoon will appear in the night sky on Jan. 1 and 31, 2018. This NASA video takes a look at the science behind these amazing celestial events. McClatchy NASA

Get ready: Two ‘supermoons’ are heading your way this January

December 31, 2017 10:37 AM