Stars and Galaxies

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a massive star's life cycle.

Front

Is the Milky Way galaxy an irregular galaxy?

Back

False. The Milky Way galaxy is a spiral galaxy.

Front

What happens when a massive star's life ends?

Back

It can become a black hole or a neutron star.

Front

What determines the life cycles of stars?

Back

The life cycles of stars are determined by their mass (size).

Front

What does the core of a Red Giant become after it collapses?

Back

The core of a Red Giant collapses and becomes a White Dwarf.

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is a black hole?

Back

A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a neutron star?

Back

A neutron star is the remnants of a massive star that has exploded in a supernova, consisting mostly of neutrons.

Front

What is the difference between a red giant and a supergiant?

Back

A red giant is a star that has expanded and cooled after exhausting its hydrogen fuel, while a supergiant is a much larger star that has also expanded but is more massive.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant, supernova, and then either a neutron star or black hole.