Which of the following types of galaxies are reddest in color?
A)spirals
B)ellipticals
C)lenticulars
D)irregulars

Question

Quizplus · Accepted Answer

Elliptical galaxies are typically composed of older stars and have very little ongoing star formation, resulting in a redder color. Spirals and irregular galaxies, on the other hand, have ongoing star formation and a higher concentration of younger, hotter stars, making them bluer in color. Lenticular galaxies have a mix of both old and young stars, so their color can vary depending on the balance between these populations.

Which of the Following Types of Galaxies Are Reddest in Color