Upload date
All time
Last hour
Today
This week
This month
This year
Type
All
Video
Channel
Playlist
Movie
Duration
Short (< 4 minutes)
Medium (4-20 minutes)
Long (> 20 minutes)
Sort by
Relevance
Rating
View count
Features
HD
Subtitles/CC
Creative Commons
3D
Live
4K
360°
VR180
HDR
5,343,523 results
Astrophysicist Dr. Neil DeGrasse Tyson was asked by a reader of TIME magazine, "What is the most astounding fact you can ...
13,109,780 views
13 years ago
"On my tombstone, I want the epitaph to read: Be ashamed to die until you have scored some victory for humanity." ― Neil ...
4,573,546 views
4 years ago
