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Hubble Verdict: De-Orbit

Posted by timothy on from the why-not-just-blow-it-up dept.

theonetruekeebler writes "CNN reports that NASA has reached a final decision for the Hubble space telescope: De-orbit. At some future date a liquid-fueled rocket will dock with the telescope and fire, hurling Hubble into the ocean. However, "Our best estimate is we probably will be able to continue to do science as we're doing it ... somewhere into 2008," according to program executive Mark Borkowski."

3 of 308 comments (clear)

  1. Re:Ocean? by Jozer99 · · Score: 5, Informative

    Hubble is meant to run mainly off solar power. Shooting it out of the solar system would make it useless after it got a short distance from the sun. Its communication system is not made to broadcast very far, and giving it a high velocity would drastically decrease its ability to take clear pictures. Also, it isn't really made for "extra-terrestrial contact". It doesn't have any greeting plaque, just some dirty pictures written on it by astronauts and the various labels and warnings on the parts.

  2. Re:Ocean? by pnewhook · · Score: 5, Informative
    Up in space theres this thing called gravity which makes it slightly difficult to break from orbit in the "up" direction and it takes quite a bit of fuel (however "down" is very easy.)

    Actually this is a very common misconception.

    Any satellite in a stable orbit is in freefall and expending none of its own energy to stay in that state. To change orbits, either up OR down requires a change in velocity, and that change in velocity requires fuel. So up is just as difficult as down energy wise.

    The only free ride you get in the down direction is when you get low enough so that atmospheric drag begins to slow you down.

    --
    Tesla was a genius. Edison however was a overrated hack who liked to torture puppies.
  3. Re:Well, the Saturn V had a 100% safety flight rec by tomhudson · · Score: 4, Informative
    Cost of a Saturn 5 booster (capable of lobbing shit "to teh moon ... and back") : $740,000,000 - 120 tons into orbit http://www.braeunig.us/space/specs/saturn.htm

    Cost of a Space shuttle: $700,000,000 per launch (not counting the latest $2,000,000,000 in upgrades or the initial cost)
    22 tons http://www.braeunig.us/space/specs/shuttle.htm

    Even taking into account inflation, the Saturn 5 still looks better.