Fwd: [New post] The Menace of the Asteroids. Part 1: The Risks

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From: AmericaSpace <donotreply@wordpress.com>
Date: December 10, 2012 4:16:18 AM GMT-06:00
To: bobbygmartin1938@gmail.com
Subject: [New post] The Menace of the Asteroids. Part 1: The Risks

David Darling posted: "[caption id="attachment_28320" align="aligncenter" width="500"] Artist's impression of an asteroid approaching the Earth. Image Credit: Jeff Darling[/caption] Of the several hundred thousand asteroids known, about 9,000 are of the near-Earth variety, a" New post on AmericaSpace The Menace of the Asteroids. Part 1: The Risks by David Darling Of the several hundred thousand asteroids known, about 9,000 are of the near-Earth variety, and of these more than 1,300 fall into the category known as potentially hazardous asteroids (PHAs). To qualify as a PHA, an asteroid must be able to come closer to the Earth than 7.5 million kilometers in its orbit and be [...] Read more of this post David Darling | December 10, 2012 at 5:14 am | Tags: aerospace, Asteroid, Cape Canaveral, CCAFS, comet, Exploration, Explore, extinction, extinction-level-event, Jet Propulsion Laboratory, JPL, Kennedy Space Center, KSC, Lincoln Near-Earth Asteroid Research, LINEAR, Mexico, Mexico's Yucatan peninsular, NASA, Near-Earth Object, NEO, PHA, potentially hazardous asteroids, rocket, Rockets, Siberia, Space, space exploration, Torino scale, Tuguska, ULA, United Launch Alliance, Wide-Field Infrared Explorer, WISE, Yucatan | Categories: Exploration, Kennedy Space Center, KSC, NASA, Science, Space, Space Exploration, Tech, Technology, ULA, United Launch Alliance | URL: http://wp.me/p1YCNG-7mI Comment    See all comments Unsubscribe or change your email settings at Manage Subscriptions. Trouble clicking? Copy and paste this URL into your browser: http://www.americaspace.org/?p=28316