White Dwarfs
Black Holes
100

what is the main factor determining whether a star becomes a white dwarf, and what is approximate mass limit (relative to our sun)

what is initial mass

100

The minimum initial mass necessary for a star to end its life as a black hole

what is  20 to 30 solar masses

200

Why do white dwarfs eventually turn into black dwarfs?

what is  they run out of nuclear fuel and spend trillions of years cooling down, eventually ceasing to emit heat or light.

200
the role that iron fusion plays in the final moments of a massive stars life

what is  by triggering its death by absorbing rather than releasing energy

300
When a star like our Sun runs out of hydrogen fuel, how does it change its structure and why does it become a red giant?

what is  The inert helium core collapses and heats up, forcing hydrogen fusion to start in a surrounding shell.

300
 Explain the process of a core-collapse supernova and what happens to the remaining core?

what is  When a massive star exhausts its nuclear fuel.

400

What is described as the "planetary nebula" phase, and what part of the star is left behind afterwards?

what is  The final short-lived phase of a medium-mass star

400

Why does a black hole's gravity become so intense that not even light can escape?

what is A massive amount of matter is packed into an extremely tiny space, creating immense density.

500

How do white dwarfs manage to resist complete gravitational collapse if they are no longer producing energy through nuclear fusion?

what is  Electron degeneracy pressure

500

What is the difference between a white dwarf and a black hole in terms of stellar remnants?

what is  White dwarfs are dense, whereas black holes are remnants of massive stars.

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