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Getbig Main Boards => General Topics => Topic started by: Stark on January 28, 2008, 08:58:03 AM
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Size Yield Crater Effect
(Megatons) (km)
........................ ........................ ......
75 m 100 1.5 Land impacts destroy area
the size of Washington or Paris)
160 m 500 3.0 Destroys large urban areas
350 m 5000 6.0 Destroys area the size of a
small state. Ocean impacts produce
tsunamis.
700 m 15,000 12 Land impact destroys Virginia,
Tiawan and ocean impact causes
major tsunami.
1.7 km 200,000 30 Land impacts affect climate,
global destruction of ozone,
tsunamis destroy coastal communities.
3.0 km 1 million 60 Large nations destroyed, widespread
fires from ejecta, climate change.
7.0 km 50 million 125 Mass extinction, global conflagration,
long term climate change.
16 km 200 million 250 Large mass extinction.
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http://www.badastronomy.com/bablog/2008/01/21/repeat-after-me-asteroid-2007-tu24-is-guy-to-earth/
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hhahaha brutal astrophysicist Stark.. ::)
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Scientists at NASA's Jet Propulsion Laboratory in Pasadena, Calif., have obtained the first images of asteroid 2007 TU24 using high-resolution radar data. The data indicate the asteroid is somewhat asymmetrical in shape, with a diameter roughly 250 meters (800 feet) in size. Asteroid 2007 TU24 will pass within 1.4 lunar distances, or 538,000 kilometers (334,000 miles), of Earth on Jan. 29 at 12:33 a.m. Pacific time (3:33 a.m. Eastern time).
"With these first radar observations finished, we can guarantee that next week's 1.4-lunar-distance approach is the closest until at least the end of the next century," said Steve Ostro, JPL astronomer and principal investigator for the project. "It is also the asteroid's closest Earth approach for more than 2,000 years."
Scientists at NASA's Near-Earth Object Program Office at JPL have determined that there is no possibility of an impact with Earth in the foreseeable future.
Asteroid 2007 TU24 was discovered by the NASA-sponsored Catalina Sky Survey on Oct. 11, 2007. The first radar detection of the asteroid was acquired on Jan. 23 using the Goldstone 70-meter (230-foot) antenna. The Goldstone antenna is part of NASA's Deep Space Network Goldstone station in Southern California's Mojave Desert. Goldstone's 70-meter diameter (230-foot) antenna is capable of tracking a spacecraft traveling more than 16 billion kilometers (10 billion miles) from Earth. The surface of the 70-meter reflector must remain accurate within a fraction of the signal wavelength, meaning that the precision across the 3,850-square-meter (41,400-square-foot) surface is maintained within one centimeter (0.4 inch).
Ostro and his team plan further radar observations of asteroid 2007 TU24 using the National Science Foundation's Arecibo Observatory in Puerto Rico on Jan. 27-28 and Feb. 1-4.
The asteroid will reach an approximate apparent magnitude 10.3 on Jan. 29-30 before quickly becoming fainter as it moves farther from Earth. On that night, the asteroid will be observable in dark and clear skies through amateur telescopes with apertures of at least 7.6 centimeters (three inches). An object with a magnitude of 10.3 is about 50 times fainter than an object just visible to the naked eye in a clear, dark sky.
Scientists working with Ostro on the project include Lance Benner and Jon Giorgini of JPL, Mike Nolan of the Arecibo Observatory, and Greg Black of the University of Virginia.
NASA detects and tracks asteroids and comets passing close to Earth. The Near Earth Object Observation Program, commonly called "Spaceguard," discovers, characterizes and computes trajectories for these objects to determine if any could be potentially hazardous to our planet. The Arecibo Observatory is part of the National Astronomy and Ionosphere Center, a national research center operated by Cornell University, Ithaca, N.Y., for the National Science Foundation. JPL is a division of the California Institute of Technology in Pasadena.
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:o :o :o :o :o :o :o :o :o :o :o :o :o :o
There's a meteor hurtling towards the earth? ???
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:o :o :o :o :o :o :o :o :o :o :o :o :o :o
There's a meteor hurtling towards the earth? ???
Yes. yahoo and other MSM have blocked all mention of it for 2 weeks while nasa fig'd out it wasn't going to hit us. now it's suddenly news! deleted from every forum instantly, very odd, i suppose to prevent panic.
it's not gonna hit us, will be about 1 lunar distance away. they are taking pics of it now www.tu24.org
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Holy Cow! CBS morning news is referring to it as a long lost US Spy satellite that may break into flames and pieces upon re-entry, they just don't know where it will re-enter the earth's atmosphere? ;D
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calculations are random crap. Force = Speed X Mass
E=MC2
the force in which a meteor hits earth isnt determind by size alone but most importantly the speed.
christ even i know this and i only watched MMA fight science
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P.I.P.
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See you tomorrow (if I'm lucky...
xxx