Could human civilization spread across the whole galaxy?
lesson duration 04:34
654,061 views
lesson duration 04:34
654,061 views
704,689 views
5,314,940 views
4,600,304 views
982,356 views
2,869,443 views
2,128,029 views
1,453,928 views
3,151,260 views
208,304 views
1,315,472 views
264,415 views
1,621,661 views
622,288 views
lesson duration 12:27
1,573,349 views
22,405 views
31,518,745 views
824,942 views
1,974,891 views
552,451 views
745,366 views
1,292,932 views
3,183,937 views
2,312,064 views
Click Register if you need to create a free TED-Ed account. If you have already signed into ted.com click Sign In to verify your authentication.
Only students who are 13 years of age or older can create a TED-Ed account.