DB Star Life

Front

What is the final stage in the life cycle of a star that is characterized by a glowing shell of ionized gas?

Back

Planetary Nebula

Front

How does the size of an average star compare to that of our Sun?

Back

About the same size

Front

List the stages of an average star's life cycle in the correct order.

Back

protostar > main sequence > red giant > white dwarf

Front

Which type of star is known to have the highest temperature?

Back

O-type stars (or blue stars) are the hottest.

Front

What astronomical event is necessary to produce elements heavier than iron?

Back

A supernova.

Front

What is a protostar?

Back

A protostar is a young star that is still in the process of forming, before it reaches the main sequence.

Front

What is the main sequence phase in a star's life cycle?

Back

The main sequence is the stable phase where a star fuses hydrogen into helium in its core.

Front

What happens to a star during the red giant phase?

Back

During the red giant phase, a star expands and cools after exhausting hydrogen in its core.

Front

What is a white dwarf?

Back

A white dwarf is the remnant core of a star that has exhausted its nuclear fuel and shed its outer layers.

Front

What role do supernovae play in the universe?

Back

Supernovae distribute heavy elements into space and can trigger the formation of new stars.