From the dawn of man until very recently, humans have been Earthbound, unable to reach even the clouds—let alone space. It's only within the last hundred years or so that the advent of manned flight and rocket ships has made the heavens attainable. In that time, we've sent people to the moon, rovers to Mars, and space probes deep into the reaches of our solar system. And advanced telescopes that orbit Earth are bringing even the most remote edges of the universe closer to home. See where space travel started, and where it's going.

More About Space Exploration

  • <p>Photo: Portrait of the Apollo 1 crew in 1967</p>

    Early U.S. Spaceflight

    The U.S. space program has had its share of successes and setbacks. See some unforgettable images from the early days of space exploration as America set its sights toward the sky.

  • <p>Photo: Glowing, sombrero-shaped galaxy</p>

    Hubble Images

    Since it was placed into orbit in April 1990, the Hubble Space Telescope has captured images and information that have transformed our understanding of the universe.

  • <p>Photo: Astronauts upgrading Hubble Space Telescope</p>

    Hubble Space Telescope

    Since 1990, the Hubble Space Telescope has given the world a bonanza of breathtaking images of the universe. See what it takes to keep this celebrity telescope running like a top.

  • <p>Photo: Apollo 11 astronaut Buzz Aldrin on the moon</p>

    Moon Exploration

    Over a brief three-year period, six U.S. astronaut crews landed on the moon, forging a new branch of space exploration. Follow in their famous footsteps.

'Live From Space' March 14

Latest Video

See more videos »