Spy Satellite to Hit Earth by late February to March |
Spy Satellite to Hit Earth by late February to March |
Guest_Bobby_* |
Jan 27 2008, 04:47 AM
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#1
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Guests |
Just read at MSNBC that a large U.S. spy satellite will hit Earth by the end of February or early March.
Better keep our hard hats ready??? Here is the article: http://www.msnbc.msn.com/id/22857051/ |
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Feb 16 2008, 10:02 AM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
The problem is that there is NO good replacement for hydrazine.
Space storable, non-cryogenic propellants are pretty much all nasty. About the only one that isn't nasty doubled is CONCENTRATED hydrogen peroxide. You can have a dual propellant system.. another hydrazine and an oxidizer like nitrogen tetroxide <gak! gag! croak!>... less total nasty stuff but twice as complicated a propulsion system. I don't know anything that has a decent "bounce per ounce" that isn't nasty. |
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