Stars, Galaxies, and the Universe

Answer the questions

In forming a star, gravity contracts a cloud of gas and dust known as a _____ down to a hot ball of gas known as a _____ (This ball of gas isn’t hot enough to support thermonuclear fusion yet).

Which of the following stars will evolve into a black hole?

When the Sun’s core runs out of hydrogen, it will begin fusing _____.

 

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