If the Sun Became a Black Hole Would Earth Fall In

The video explains that only massive stars can become black holes, while the Sun will turn into a red giant and then a planetary nebula. It discusses the properties of black holes, including their mass, size, and event horizon. The video reassures that replacing the Sun with a black hole of equal mass wouldn't affect Earth's orbit due to the unchanged gravitational pull. It highlights the importance of the event horizon and Schwartzschild radius in determining safety around black holes. The video concludes by emphasizing the stability of orbits around massive objects, regardless of their size.

What will the Sun eventually become instead of a black hole?

• A red giant and then a planetary nebula

• A neutron star

• A white dwarf

• A supernova

If the Sun were replaced by a black hole of the same mass, what would happen to Earth's orbit?

• It would spiral into the black hole

• It would remain unchanged

• It would move away from the black hole

• It would become elliptical

What is the event horizon of a black hole?

• The point where gravity is weakest

• The outermost layer of a black hole

• The point where light cannot escape

• The center of the black hole

How does the Schwartzschild radius change as a black hole's mass increases?

• It fluctuates randomly

• It increases

• It remains constant

• It decreases

What primarily determines the stability of an orbit in space?

• The distance from the object being orbited

• The mass of the object being orbited

• The speed of the orbiting object

• The size of the object being orbited