Question

If Earth had no atmosphere, what color would the eclipsed moon appear in the sky?

dark, essentially invisible
dark blue
coppery-red
mustard-yellow
light blue

Answer 1

If Earth had no atmosphere, the eclipsed moon would appear coppery-red in the sky.

Step-by-step explanation:

If Earth had no atmosphere, during a lunar eclipse, the eclipsed moon would appear to be coppery-red in the sky.

This phenomenon occurs because Earth's atmosphere scatters shorter wavelength light (blue and violet), causing them to be absorbed, while longer wavelength light (red and orange) is able to pass through and reach the moon.

Without the atmosphere, the only light reaching the moon would be the sunlight that has traveled through Earth's atmosphere and has been bent and refracted to create a reddish appearance.

Learn more about Lunar eclipse