Stars and Galaxies

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What category do most stars belong to?

Back

Most stars belong to the Main Sequence category.

Front

What are main sequence stars primarily made of?

Back

Main sequence stars are primarily made of Hydrogen and Helium.

Front

What determines the length of one day on Earth?

Back

The length of one day on Earth is determined by how long it takes Earth to rotate once.

Front

How is energy generated during the main sequence phase of a star?

Back

Energy is generated during the main sequence by the fusion of Hydrogen into Helium.

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 the difference between a spiral galaxy and an elliptical galaxy?

Back

A spiral galaxy has a flat, rotating disk with arms, while an elliptical galaxy is more rounded and lacks the distinct arms.

Front

What is a supernova?

Back

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

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, and supernova or white dwarf.

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.