Subscribe free to our newsletters via your
. 24/7 Space News .

Scientists find 'rubble pile' asteroids
by Staff Writers
Tel Aviv, Israel (UPI) Sep 13, 2010

disclaimer: image is for illustration purposes only

Asteroids made of gravel-sized rocks held together by gravity could hit the Earth like a shotgun blast rather than a single cannonball, Israeli researchers say.

It was long theorized that these "rubble pile" asteroids, if they spun fast enough, could throw off material through centrifugal force to create a second collection of rocks -- a "separated" twin -- that would spin around the sun in the exact same orbit.

Now researchers at Tel Aviv University, using the school's Wise Observatory deep in the Negev Desert, have proved the existence of these theoretical "separated asteroid" pairs, a university release said Monday.

David Polishook and Noah Brosh of the school's Department of Geophysics and Planetary Sciences say the research has not only verified a theory, but could have implications if such an asteroid passes close to Earth.

Instead of a giant solid rock colliding with the Earth's surface, Brosch says, the planet would be pelted with the innumerable pebbles and rocks that make up one of these asteroids.

This knowledge could make a difference in the defensive tactics to be considered if an asteroid were on a collision course with Earth, the researchers say.


Related Links
Asteroid and Comet Mission News, Science and Technology

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Asteroid Cornucopia
Pasadena CA (SPX) Sep 09, 2010
New research from NASA's Spitzer Space Telescope reveals that asteroids somewhat near Earth, termed near-Earth objects, are a mixed bunch, with a surprisingly wide array of compositions. Like a pinata filled with everything from chocolates to fruity candies, these asteroids come in assorted colors and compositions. Some are dark and dull; others are shiny and bright. The Spitzer observatio ... read more

Russia To Test Unmanned Lander For Mars Moon Mission

China preps next lunar space mission

Chandrayaan-2 Will Try Out New Ideas And Technologies

China Publishes Official Chinese Names For Places On The Moon

NASA's Next Mars Rover Rolls Over Ramps

Don't Forget Deimos

Russia to test Mars lander for 2011 flight

How Microbes Could Help Colonize Mars

OS/COMET To Be Used On Orion CEV Project

NSS Calls For House To Adopt Senate Version of NASA Authorization Act Of 2010

Goddard Scientists Explore Desert RATS

NASA Loves A Good Challenge - Not Business As Usual

China's Second Lunar Probe Chang'e-2 To Reach Lunar Orbit Faster Than Chang'e-1

China Finishes Construction Of First Unmanned Space Module

China Contributes To Space-Based Information Access A Lot

China Sends Research Satellite Into Space

NASA Opens Space Station For Biological Research From NIH Grants

Russian cargo vessel docks at International Space Station

ISS Crew Prepares For Cargo Craft

Module To Get A Home In Space

Sirius XM-5 Satellite Delivered To Baikonur For October Launch

Emerging Technologies May Fuel Revolutionary Launcher

EUMETSAT Chooses Arianespace To Launch Metop-C

Falcon 1e Launch Capabilities Brought To The European Institutional Market

This Planet Smells Funny

Scientists looking to spot alien oceans

Deadly Tides Mean Early Exit For Hot Jupiters

Can We Spot Volcanoes On Alien Worlds

Google to launch e-book service in Japan in 2011

Does A Molecular Machine Trot Pace Or Glide Across A Surface

7,500 Germans rally for greater data privacy

Taiwan turns plastic junk to 'green' gold

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement