How are globular clusters so old? Where did they come from, and how are they linked to galaxy formation? What makes them so globular, anyway?
What is the simulation hypothesis? Is it just pseudoscience? How do we grapple with its implications? Find the answer in today’s Ask a Spaceman!
Where did ‘Oumuamua come from? What is it made of, and how did it end up here? Is it really an artifact of an alien civilization?
What missions will come after the James Webb Space Telescope launches? What new discoveries await us? How long will they take to start?
How do giant planets make diamond rain? Does it really, you know, rain? Where does diamond rain exist?
What is a vacuum, and what makes a false one? What happened in the early universe to bring about our current physics? Will it happen again? If so, when?
What are the different kinds of gamma ray bursts? What powers them? What do we still have to understand about them? I discuss these questions and more in today’s Ask a Spaceman!
Is there more to say about the “crisis in cosmology”? What are the fundamental disagreements? Is there any way out of this mess? Why am I talking about it again? I discuss these questions and more in today’s Ask a Spaceman!
What kind of signals are we searching for from aliens? What are technosignatures and biosignatures? How are we looking for non-intelligent life? Is there any hope of finding life in our own solar system? I
Why is James Clerk Maxwell so dang awesome? How was he able to unify the forces of electricity and magnetism? Why was his work so revolutionary? @PaulMattSutter will answer this at #365DaysOfAstro