The Threat and the Opportunity of Asteroids and Other Near-earth Objects: Hearing Before the Subcommittee on Space and Aeronautics of the Committee on Science, U.S. House of Representatives, One Hundred Fifth Congress, Second Session, May 21, 1998, Volume 4 |
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activities Air Force approach Arizona asteroid bodies C.R. Chapman CANAVAN cause Chairman ROHRABACHER chance Chapman comet coming Committee coordination cost crater damage debris decade Defense deflection detection diameter discovered discovery Earth effects effort event example existing experiments funding future GEODSS goal going Group HALL happen hazard hearing impact important increase Institute issue J.S. Lewis larger Leonid look magnitude materials mean Member metals meteor million missions month NASA Near-Earth near-Earth asteroids NEOs objects observations operational orbit particles physical PILCHER planet Planetary population possible potential prepared present Report satellites Science scientific scientists Shoemaker solar system Space spacecraft Spaceguard Survey storm studies Subcommittee Survey talking telescopes testimony Thank there's things threat understand University