HR diagram and Cosmos (updated)

Front

What is the relationship between luminosity and temperature for main sequence stars?

Back

For main sequence stars, the greater the luminosity, the higher the temperature.

Front

What is the term for the process by which a star changes over its lifetime?

Back

Life cycle.

Front

What encompasses everything that exists, including all matter and energy?

Back

The Universe.

Front

What force governs the motion of our solar system?

Back

Gravity.

Front

How many stars are in our Solar System?

Back

One.

Front

What is a main sequence star?

Back

A star that is in the stable phase of its life cycle, fusing hydrogen into helium in its core.

Front

What is the significance of the HR diagram in astronomy?

Back

The HR diagram plots stars according to their luminosity and temperature, helping to classify them and understand their life cycles.

Front

What are the two main types of stars on the HR diagram?

Back

Main sequence stars and giant stars.

Front

What is a red giant?

Back

A large, luminous star that has exhausted the supply of hydrogen in its core and is now fusing helium.

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low to medium mass star after it has shed its outer layers.