New video venture for NBC Mach called "Space. Is. Awesome." First up, gravitational waves.
All tagged black holes
Nautilus - How to recognize a black hole
A look at AGN unification on the Nautilus blog, aka when supermassive black holes have an identity crisis.
NBC News - Are black holes deadly?
I explain why black holes aren't a threat to Earth (for now...) the NBC News video series: 30 Seconds to Know.