Deep Time: Crash Course Astronomy #45
11:23
Everything, The Universe...And Life: Crash Course Astronomy #46
14:05
Gamma-Ray Bursts: Crash Course Astronomy #40
9:09
The Impossible Hugeness of Deep Time
12:11
Why Time and Space swap in a Black Hole
11:56
What Will Earth Be Like 300 Million Years From Now?
13:03
Trump's Sad Birthday Parade; Historic "No Kings" Protests; Trump's Mobile Phone Grift: A Closer Look
13:25
Trump’s Birthday Parade Dwarfed by National No Kings Protests & Don Jr. Announces Greatest Grift Yet
15:38