Stars and Galaxies Review

Front

What is an irregular galaxy?

Back

A type of galaxy that does not have a distinct regular shape, often containing a mix of young and old stars.

Front

Which star is known to be brighter than the sun?

Back

Aldebaran is a star that is brighter than the sun.

Front

What is Cosmic Background Radiation?

Back

The remaining energy from the Big Bang, filling the universe.

Front

What type of galaxy has little gas and old stars?

Back

Elliptical galaxy.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

Define a spiral galaxy.

Back

A galaxy characterized by a flat, rotating disk containing stars, gas, and dust, with spiral arms.

Front

What is a galaxy?

Back

A massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

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

Back

Spiral galaxies have distinct arms and are rich in gas and young stars, while elliptical galaxies are more rounded and contain older stars with little gas.

Front

What is a star?

Back

A luminous celestial body made of plasma that generates energy through nuclear fusion.

Front

What is the significance of the Big Bang?

Back

The Big Bang theory explains the origin of the universe, suggesting it began from a singular point and has been expanding ever since.