If we compare an elliptical galaxy and a spiral galaxy of the same mass 1 billion years after both began formation,
A) they should each have about the same number of stars.
B) the elliptical galaxy will have formed more stars than the spiral.
C) the spiral galaxy will have formed more stars than the elliptical.
D) neither galaxy will have formed any stars during the first billion years.

Question

Quizplus · Accepted Answer

Elliptical galaxies tend to form stars more rapidly in their early stages compared to spiral galaxies. This is because elliptical galaxies often experience a phase of rapid star formation, known as a starburst, early in their history, leading to a quicker depletion of their gas reservoirs. As a result, an elliptical galaxy of the same mass as a spiral galaxy is likely to have formed more stars within the first billion years after their formation began.

If We Compare an Elliptical Galaxy and a Spiral Galaxy