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Space Observations - Mountains on the Moon

Mountains on the Moon

Peer through the right telescope on Earth and it is possible to view something in space that is a billion light years away—just one light year is about 5,865,696,000,000 miles (9,460,800,000,000 kilometers)! The telescope was the first groundbreaking tool used in astronomy. With the telescope, astronomers could study the motions of celestial objects that were previously undetectable.

Did You Know?

  • The largest optical telescope in the world is the W. M. Keck telescope in Hawaii. It measures 33 feet (10 meters) in diameter. It is located at an elevation of 2.7 miles (4.3 kilometers) above sea level on top of Mount Mauna Kea, an extinct volcano.
  • With an amateur telescope, you can see light from objects in space that are 40 million to 500 million light years away.
  • Doppler radar uses the principles of the Doppler effect to forecast weather. In...

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