
Cycles in the Sky: Crash Course Astronomy #3
This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe.
This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe.
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.