How do white dwarfs compare with supergiants, in terms of temperature and luminosity?

Which area of the H-R diagram do stars spend the majority of their lifetime?

Which element is represented in the spectrum below?

What is the primary source of energy in the Sun's core?

The two images below show the area swept out by the same planet during two separate time spans. If the first picture represents the area swept out during a time of "A" days and the second represents the area swept out during a time of "B" days, which of the following statements is true about A and B?

Four planets, called A, B, C, and D, have orbital periods as shown in the table below. Which planet is closest to the sun?

What does the redshift of distant galaxies and stars indicate?

Which mathematical representation is used to describe the orbit of a planet around the Sun?

What does the presence of water on Earth likely indicate about its early history?

A collision with another small planet likely explains the formation of:

What is the cosmic microwave background (CMB) radiation?

What is the most abundant element in the universe?

What is something you hope to learn about astronomy?

What are some important things I should know about you?

For example:

• Preferred name

• Pronouns

• Learning style

• Hobbies

• Jobs & other responsibilities

• Things teachers do that you like