SPACE EXPLORATION

Space exploration is a broad topic covering many facets of deep-space and planetary science. Learn about space probes, Mars Rovers, SETI and other out-of-this-world subjects.
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How the Space Launch System Will Work

Have you met the driving force behind the U.S. space program for the foreseeable future? Take a second to get acquainted with the proposed blasting behemoth.

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  • How do space telescopes die?

    How do space telescopes die?

    Even NASA's best-designed space telescopes can break, become obsolete or simply complete their missions. But what happens then? Are they shipped off to some great cosmic graveyard, or are they given a renewed lease on life and scientific glory? See more »

  • How do you land a spaceship on a comet?

    How do you land a spaceship on a comet?

    Catching a speeding comet, let alone landing on one, requires trick-shot billiards on an astronomical scale. Crazy as it sounds, the European Space Agency might just pull it off. See more »

  • How does water on Mars and the moon differ from water on Earth?

    How does water on Mars and the moon differ from water on Earth?

    You're parched. Do you know what planetary thirst quencher to reach for? Is Martian water of a vintage you'd rather not try? And how are those lunar additives going to work out for you? See more »

  • How Hubble Space Telescope Works

    How Hubble Space Telescope Works

    Since its launch in 1990, the Hubble Space Telescope has ranked as one of man's greatest achievements in space or otherwise. What does the future hold for the great observatory, and will its space telescope successor measure up to Hubble? See more »

  • How is the JWST different than Hubble?

    How is the JWST different than Hubble?

    Why do we need the JWST? Isn't Hubble already doing a good enough job staring into space? What's the difference between the two? With space telescopes, it turns out, it's not always about what you see, but how you look at it. See more »

  • How Lunar Landings Work

    How Lunar Landings Work

    People around the world watched as Neil Armstrong touched the moon and declared, "That's one small step for man; one giant leap for mankind." But how did we put a man on the moon? See more »

  • How Lunar Liquid Mirror Telescopes Work

    How Lunar Liquid Mirror Telescopes Work

    NASA's next generation of telescopes will collect 1,736 times more light than the Hubble and will penetrate the depths of the universe to see objects nearly as old as the Big Bang. See more »

  • How many planets in our universe could support life?

    How many planets in our universe could support life?

    We don't know the answer to how many civilizations might exist in the universe. But we do know the factors that allow life on Earth. Are there other planets that fit the bill? Oh yes indeed. See more »

  • How Mars Odyssey Works

    How Mars Odyssey Works

    Mars Odyssey is NASA's latest Mars spacecraft, and it's going to the red planet in search of water. Learn how this orbiter could pave the way for manned missions to Mars! See more »

  • How much food and water do you need for a one-year stay on Mars?

    How much food and water do you need for a one-year stay on Mars?

    If you spent a year on Mars, you would need to take more food and water than you could possibly carry. But if you had to go, how much would be enough? See more »

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