What is the boundary around a black hole past which nothing can escape called?

What is a black hole primarily studied by?

What type of black hole is believed to be created at the end of a massive star's life cycle?

What is the mass of a black hole mainly responsible for determining?

What type of black hole is believed to exist at the center of most galaxies, including our own Milky Way galaxy?

What powerful jet of energy can be created when a black hole swallows up a nearby star?

What do scientists believe happens to time near a black hole?

What is the most common type of black hole?

How do scientists study black holes if they cannot be directly observed?

What unusual rule can be bypassed near a black hole due to curved space-time?