General Science

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Stars smaller and more massive than white dwarfs.

The innermost planet in the solar system.

All stars regardless of their size will eventually run out of fuel and collapse due to gravity.

The Milky Way is this type of galaxy.

Very massive stars produce supernova when they die.

Dense objects with gravity so strong that not even light can escape.

Developing star not yet hot enough to produce nuclear fusion

The red planet.