1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Pic Of The Day 16th March

Discussion in 'TOSAH Archive' started by Markjcj, 17 Mar 2003.

  1. Markjcj

    Soldato

    Joined: 9 Nov 2002

    Posts: 5,457

    Location: Here

    Pic Of The Day 17th March

    Todays pic is quite different to the usual offerings found in this post, and could easily be mistaken for something from a sci-fi movie.:)

    [​IMG]

    Solar Sail

    Nearly 400 years ago astronomer Johannes Kepler observed comet tails blown by a solar breeze and suggested that vessels might likewise navigate through space using appropriately fashioned sails. It is now widely recognized that sunlight does indeed produce a force which moves comet tails and a large, reflective sail could be a practical means of propelling a spacecraft. In fact, the illustration above represents one concept explored by NASA centers to develop an interstellar probe pushed along by sunlight reflected from an ultrathin sail. Nearly half a kilometer wide, the delicate solar sail would be unfurled in space. Continuous pressure from sunlight would ultimately accelerate the craft to speeds about five times higher than possible with conventional rockets -- without requiring any fuel! If launched in 2010 such a probe could overtake Voyager 1, the most distant spacecraft bound for interstellar space, in 2018 going as far in eight years as the Voyager will have journeyed in 41 years.

    Credit: NASA / MSFC Illustration

    A larger version of this piccy can be found here, this is a 198K Jpeg image.

    A site with further explainations about solar sails can be found here.


    Previous Pic Of The Day posts

    16th Mar 03
    15th Mar 03
    14th Mar 03
    13th Mar 03
    11th Mar 03
    09th Mar 03
    08th Mar 03
     
    Last edited: 17 Mar 2003
  2. Mandex001

    Mobster

    Joined: 18 Oct 2002

    Posts: 2,668

    Location: Bideford, Devon.

    ohhhh time loop effect.... nice post.
     
  3. Berserker

    Man of Honour

    Joined: 4 Nov 2002

    Posts: 15,448

    Location: West Berkshire

    The Planetary Society have an on-going privately funded Solar Sail Project - Cosmos 1.

    Last I heard they were having some technical difficulties with the launch vehicle, and some funding problems. I hope they get the problems sorted out - certainly looks like an interesting concept.
     
  4. VirtualAdept

    Mobster

    Joined: 23 Oct 2002

    Posts: 4,385

    Location: North Devon

    Damn that temporis.

    Nice pic as always sah
     
  5. Markjcj

    Soldato

    Joined: 9 Nov 2002

    Posts: 5,457

    Location: Here

    Sorry about the wrong date chaps:o

    Me needs to get my brain back in sync with reality today, I've been too busy planning things that are date specific and I lost track of the date.
     
    Last edited: 17 Mar 2003
  6. PurDunamis

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,179

    Location: Messing with a Nd:YAG, DCM and a Raman Shifter

    Nice pic sah:)
     
  7. Berserker

    Man of Honour

    Joined: 4 Nov 2002

    Posts: 15,448

    Location: West Berkshire

    Can't it be edited then S'ah. I'm sure I've changed the titles of posts before - maybe you can only do it for a short while.

    Not a problem anyway - it doesn't detract from the picture (despite the comments about temporal anomalies).
     
  8. Markjcj

    Soldato

    Joined: 9 Nov 2002

    Posts: 5,457

    Location: Here

    Hmmmm.. I guess it can be done then, I know when I've tried to edit them before I've never managed to do it.
     
  9. Mandex001

    Mobster

    Joined: 18 Oct 2002

    Posts: 2,668

    Location: Bideford, Devon.


    but wont that mean all that you have planed will be wrong as well??? :D
     
  10. Markjcj

    Soldato

    Joined: 9 Nov 2002

    Posts: 5,457

    Location: Here

    LoL, no I was using my calendar for my other stuff.:)

    Strange, I edited the title and it's changed on the top of the thread but not on the post title:confused: