Why are small stars red? Why are small stars so common? Why are small stars so interesting for the hunt for life?

Why are small stars red? Why are small stars so common? Why are small stars so interesting for the hunt for life?
What did Hubble really discover? Why does redshift imply an expanding universe? Why is the night sky dark? Why is there so much hydrogen, and how is that connected to the Big Bang?
How does gravity bend the path of light? Does it seriously act like a lens or is that just a metaphor?
Have we figured out dark matter? No. Oumuamua won’t stay boring, year in review with special guest Johnny DiLoretto, and of course listener questions
NASA wants to return something from Mars…almost, NASA gets a new direction, a supermoon rant, and of course listener questions!