What happens close to the speed of light? Can dark matter stars exist? more on today’s Space radio at #365daysofastro with @PaulMattSutter.

What happens close to the speed of light? Can dark matter stars exist? more on today’s Space radio at #365daysofastro with @PaulMattSutter.
Why the universe expands? How can black holes form in the big bang? more with @PaulMattSutter at #365DaysOfAstro
What is the so-called “OMG Particle”? Where could it possibly come from, and how are magnetic fields involved? How can we detect these cosmic rays?
Seriously, What is Gravity? Another story of gravity about How did Einstein develop General Relativity? What does it mean for different kinds of masses to be equivalent? How does gravity do what it does? Why is curvature so important in understanding gravity?