> News story > Discussion questions > Answer 3

Question 3:
Why did scientists use the Hubble Space Telescope to observe the Moon?

Our planet’s atmosphere absorbs most of the ultraviolet light that reaches it, preventing that light from reaching the ground. The Hubble Space Telescope is orbiting Earth high above our atmosphere. The ultraviolet light reflected off the Moon was captured by the telescope before it reached Earth’s atmosphere, where it would have been absorbed.

<< Back to discussion questions