Modern astronomical observatories sometimes shine lasers into the sky because they:
A) help guide the pointing of the telescope.
B) allow corrections of atmospheric turbulence.
C) decrease the atmospheric opacity.
D) calibrate spectroscopes.

Question

Quizplus · Accepted Answer

Shining lasers into the sky can allow astronomers to measure and correct for atmospheric turbulence, which can cause distortions in astronomical images. This technique is known as adaptive optics and is used to improve the resolution and clarity of images obtained from telescopes on the ground.

Modern Astronomical Observatories Sometimes Shine Lasers into the Sky Because