User Tag List

First 567

Results 61 to 62 of 62

  1. #61
    ish red no longer *sad* nightning's Avatar
    Join Date
    Apr 2007
    MBTI
    INfj
    Posts
    3,741

    Default

    Quote Originally Posted by runvardh View Post
    They'll eventually fall and burn up... ^^;;
    True.

    Hmmmm how large do the pieces need to be to not be completely burnt up coming through the atmosphere? That depends on composition doesn't it? Hmmm

  2. #62
    Lallygag Moderator Geoff's Avatar
    Join Date
    Apr 2007
    MBTI
    INXP
    Posts
    5,584

    Default

    Quote Originally Posted by nightning View Post
    True.

    Hmmmm how large do the pieces need to be to not be completely burnt up coming through the atmosphere? That depends on composition doesn't it? Hmmm
    Good point... one main theory is that the asteroid belt is a planet that failed to form due to the disturbance of the massive gravity of jupiter.. so it is mainly hunks of primeval rock (probably igneous). So I think it'd be mostly destructive rocky fragments.

    If it's a comet... ice and rock in a bit dirty snowball. Bear in mind it is estimated that half the water on the planet came from comet impacts in the early life of the planet.. a multitude of comet strikes as the solar system settled down. Apparently we are still in the bombardment phase.. it is just very infrequent now (from a human viewpoint).

    Shoemaker-Levy split into 21 fragments, and was a dirty snowball and made an almighty explosion on Jupiter.. so don't think of it as wimpy ice that just melts! Just one fragment alone had an impact that created a dark spot over 2 earth radii across, with an estimated energy equivalent to 6,000,000 megatons of TNT (750 times the world's nuclear arsenal)

    Whee!

Similar Threads

  1. Mining Asteroids
    By darlets in forum Science, Technology, and Future Tech
    Replies: 22
    Last Post: 12-13-2008, 12:57 PM
  2. Replies: 5
    Last Post: 03-20-2008, 08:21 PM
  3. eyebyte II: eyebyte strikes back - 2008
    By eyebyte in forum Welcomes and Introductions
    Replies: 37
    Last Post: 02-13-2008, 12:28 PM
  4. 2008, Bring it!
    By Tigerlily in forum The Bonfire
    Replies: 81
    Last Post: 01-02-2008, 05:13 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Single Sign On provided by vBSSO