Astronomers can look back in time.

Major scientific telescopes are operated by hand.

Telescopes cannot be pointed at the Sun.

Solar observatories are important in day-to-day life on Earth.

Some telescopes are thousands of kilometers across.

One of the world’s largest telescopes is located on a volcano in Hawaii.

Mizar was the first multiple star discovered by telescope.

Not all telescopes "see" light.

The first astronomer to use a telescope was Galileo.

Pluto was the first planet to be discovered by telescope.