Broadcast Outage: We're investigating a broadcast transmission failure affecting the San Luis Valley from Antonito in the south to Salida in the north. We're working to resolve this issue. You can stream our live broadcast online or via the RMPBS+ App.

Stream live and on-demand content now on our new app:
RMPBS+

Help tell more stories in 2026 - make a year-end gift!

Give Now
Crash Course Astronomy show's poster
Science and Nature
Crash Course Astronomy

Deep Time: Crash Course Astronomy #45

Welcome to school without the classroom! Join host Phil Plait and discover everything there is to know about the cosmos.

Deep Time: Crash Course Astronomy #45

Season 1 Episode 45 | 15m 0s

As we approach the end of Crash Course Astronomy, it’s time now to acknowledge that our Universe’s days are numbered.

Crash Course Astronomy

Watch more episodes

See more
See more

Subscribe to Our Newsletters

Get trusted Colorado stories, programs, and events from Rocky Mountain PBS straight to your inbox.

Set Your Preferences >