Subscribe free to our newsletters via your
. Military Space News .




DEEP IMPACT
NASA used satellite to follow plume left by exploding meteor
by Staff Writers
Greenbelt, Md. (UPI) Aug 15, 2013


disclaimer: image is for illustration purposes only

NASA says sensitive instruments on a satellite allowed them to track the dust plume created by the meteorite that exploded over Russia in February for months.

NASA atmospheric physicist Nick Gorkavyi and his colleagues in Greenbelt, Md., were able to use the satellite data to record a never-before-seen view of the atmospheric aftermath of the explosion of the meteor over the Russian city of Chelyabinsk -- coincidentally Gorkavyi's home town.

That explosion deposited hundreds of tons of dust up in the stratosphere, allowing NASA's Suomi NPP satellite to gather unprecedented measurements of how the material formed a thin but cohesive and persistent stratospheric dust belt, NASA reported Wednesday.

"We wanted to know if our satellite could detect the meteor dust," Gorkavyi said. "Indeed, we saw the formation of a new dust belt in Earth's stratosphere, and achieved the first space-based observation of the long-term evolution of a bolide plume."

The satellite data showed that four days after the explosion the faster, higher portion of the plume had snaked its way entirely around the Northern Hemisphere and back to Chelyabinsk.

And at least three months later a detectable belt of bolide dust persisted around the planet, the researchers said.

Modern technology offers an improved level of understanding of injection and evolution of meteor dust into the atmosphere, including from giant cosmic impacts in Earth's past, Gorkavyi said.

"Of course, the Chelyabinsk bolide is much smaller than the 'dinosaurs killer,' and this is good: We have the unique opportunity to safely study a potentially very dangerous type of event," he said.

.


Related Links
Asteroid and Comet Impact Danger To Earth - News and Science






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

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle








DEEP IMPACT
Skywatchers readying for cosmic light show from meteor shower
Huntsville, Ala. (UPI) Aug 9, 2013
The imminent Perseid meteor shower, the brightest and showiest of such events, could bring a light show of as many as 70 shooting stars an hour, experts say. Sunday night into early Monday and again Monday night into early Tuesday will be the best times to see the annual meteor shower, they said. A cloud of comet dust annually brings this shower, among the brightest and most reli ... read more


DEEP IMPACT
US missile shield safeguards not enough for compromise

LockMar Receives Contract Modification For PAC-3 Missiles

Rafael gears up for Israel's new defense era

Early hardware delivery enables deployment of crucial missile defense radar

DEEP IMPACT
New Iran launchpad for ballistic missile tests: experts

Raytheon receives contract for advanced Standard Missile-3

US Army and USAF intercept cruise missile for first time with JLENS-guided AMRAAM

Rolling Airframe Missile Block 2 completes initial fleet firing

DEEP IMPACT
MQ-8B Fire Scout Unmanned Helicopter Passes 5,000 Flight Hours In Afghanistan

CAE training services, products contracted by U.S., Australia

Navy Turns to UAVs for Help with Radar, Communications

Kerry hopes drone strikes in Pakistan will end 'very soon'

DEEP IMPACT
New Military Communications Satellite Built By Lockheed Martin Launches

US Navy Poised to Launch Lockheed Martin-Built Secure Communications Satellite for Mobile Users

Northrop Grumman Moves New B-2 Satellite Communications Concept to the High Ground

Canada links up on secure U.S. military telecoms network

DEEP IMPACT
India moves closer to buying U.S.-made howitzers

Boeing and US Navy Demo New Targeting and Data Systems on EA-18G

F-35B Ready For Sea Trials

U.S. Navy awards contracts for natural resources management

DEEP IMPACT
Lithuania to extradite Russian to US in arms case

Colombia aims to raise defense industry profile

US could reduce army by further 15 percent: Hagel

Israeli military exports hit record $7.5B

DEEP IMPACT
Japan ministers visit controversial war shrine

Talks begin for more US troops in Philippines

Gibraltar row heats up as Spain, Britain make threats

Aging Chinese apologise for Cultural Revolution 'evil'

DEEP IMPACT
SU Chemists Develop 'Fresh, New' Approach to Making Alloy Nanomaterials

Heterogeneous nanoblocks give polymers an edge

Size matters in nanocrystals' ability to adsorb release gases

Gold nanoparticles improve photodetector performance




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