Share the knowledge!
Key Facts In This Video
Astronomers believe there is a zone around the solar system called the Oort cloud, but it has never been observed. 00:24
We are sitting 19,200 light years from the center of the Milky Way. 00:43
Scientists think the Oort cloud contains up to 2 trillion icy objects. 02:12
Wake up with the smartest email in your inbox.
Our best articles a few times a week.