This Meteor 'Exploded' Over Greenland, But Nobody Saw It. Here's Why It Matters.

A fireball that streaked across the sky above the Thule Air Base in Greenland on July 25 was notable for not only the 2.1 kilotons of energy it released but also the stir it caused on social media.

via Live Science https://ift.tt/2KDRm5M