characteristics of the universe

Front

What is a Main Sequence Star?

Back

A Main Sequence Star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

Front

What are the three shapes of galaxies?

Back

The three shapes of galaxies are spiral, elliptical, and irregular.

Front

List the stars from coolest to hottest.

Back

Red, Yellow, White, Blue.

Front

What type of galaxy has mostly old stars and very little dust and gas?

Back

Elliptical galaxy.

Front

What is a Nebula?

Back

A Nebula is a giant cloud of dust and gas in space.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

A spiral galaxy has a flat, rotating disk containing stars, gas, and dust, while an elliptical galaxy is more rounded and has older stars with less gas and dust.

Front

What is a black hole?

Back

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

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation for the origin of the universe, stating that it began as a singularity and expanded rapidly.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is the difference between a star and a planet?

Back

A star is a massive celestial body that generates light and heat through nuclear fusion, while a planet is a smaller body that orbits a star and does not produce its own light.