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Ages of stars

Last updated almost 5 years ago

3 questions

1

1

1

Question 1

1.

Which of the following spectral types of stars could possibly be ten billion years old?

K

B

O

M

Question 2

2.

What does "zero age main sequence" mean?

The star will never enter the main sequence

The spectral type at which a star enters the main sequence

A star is fusing helium into carbon, oxygen and nitrogen

A star is swelling to a giant

Question 3

3.

Stars cannot fuse any element heavier than _____.

Nitrogen

Gold

Magnesium

Iron