
Eclipses: Crash Course Astronomy #5
The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you.
The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you.
Phil gives the course a send off with a look at some of his favorite topics.
Our Universe’s days are numbered.
Thanks to the wonders of physics, we can map a timeline of the universe’s history.