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Please Explain: Satellites

Friday, September 05, 2008

Please Explain is all about satellites – find out what they are, how they work, and what role they play in your everyday life – from cellphones to the weather report. Dr. Christopher Small is a geophysicist at the Lamont-Doherty Earth Observatory of Columbia University; Dr. Scott E. Palo is a satellite engineer and Associate Professor of Aerospace Engineering Sciences at UC Boulder.


Comments

  • [1] AnnR from Andes, New York September 05, 2008 - 01:02PM

    if most satellites are geosynchronous, why can I see satellites moving across the night sky? I would think they would seem to stay in the same place ...in which case I wouldnt notice them.


  • [2] MJ September 05, 2008 - 01:12PM

    most geo sats are "parked" by the Equator


  • [3] A Fisher from LIC September 05, 2008 - 01:31PM

    This is a great real time link, java, to satellite orbits:

    http://science.nasa.gov/Realtime/jtrack/3d/JTrack3d.html

    also there is a noteworthy satellite post at slashdot today:

    http://science.slashdot.org/science/08/09/05/1231228.shtml


  • [4] Caitlin from Brooklyn September 05, 2008 - 01:34PM

    Is anyone with the money to do so allowed to launch a satellite? Is there some sort of national/international regulation committee to keep them organized up there?


  • [5] Darrick Grooms from Princeton, NJ September 05, 2008 - 01:39PM

    What about space junk, are our satellites safe?


  • [6] A Fisher from LIC September 05, 2008 - 01:42PM

    Caitlin,

    If you look at the Nasa link above and select the "Satellites" menu option, you can view only amateur satellites.

    A


  • [7] Jenna from Jersey City September 05, 2008 - 01:46PM

    I've read (in Wired) that private citizens have been profiled for tracking satellites in the sky. Basically they can't be hidden and people like Osama bin Landin can literally hide from spy satellites.


  • [8] JT from Long Island September 05, 2008 - 01:48PM

    How much danger is the space shuttle in regarding the debris that orbits the earth? Will there be a point where it will be too dangerous to launch humans into space because of the clutter or will there always be enough space out there to get through?


  • [9] Jenna from Jersey City September 05, 2008 - 01:53PM

    To follow up, there are communities on the internet that share satellite information.


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