En illustration av en asteroid som når jorden. (NTB)

Algoritm ska rädda jorden från dödliga asteroider

En forskargrupp vid B612 Foundation har upptäckt över 100 asteroider med hjälp av en algoritm, rapporterar New York Times.

Upptäckten gjordes genom att algoritmen sållade ut asteroider bland 68 miljarder prickar av kosmiskt ljus på 412 000 bilder från vetenskapscentret National Optical-Infrared Astronomy Research Laboratory. Algoritmen, som också kan identifiera asteroider och följa deras rörelse, togs fram i ett samarbete mellan B612 och universitetet i Washington.

– Det här är den moderna astronomin, säger den forna Nasa-astronauten Ed Lu som leder forskargruppen.

Bara 40 procent av de 25 000 asteroider som är över 140 meter i diameter och som uppskattas befinna sig nära jorden har hittats. Ed Lu, som har en doktorsexamen i tillämpad fysik, vill hitta rymdstenar som kan äventyra livet på jorden flera år innan de når hit.

bakgrund
 
B612 Foundation
Wikipedia (en)
The B612 Foundation is a private nonprofit foundation headquartered in Mill Valley, California, United States, dedicated to planetary science and planetary defense against asteroids and other near-Earth object (NEO) impacts. It is led mainly by scientists, former astronauts and engineers from the Institute for Advanced Study, Southwest Research Institute, Stanford University, NASA and the space industry. As a non-governmental organization it has conducted two lines of related research to help detect NEOs that could one day strike the Earth, and find the technological means to divert their path to avoid such collisions. It also assisted the Association of Space Explorers in helping the United Nations establish the International Asteroid Warning Network, as well as a Space Missions Planning Advisory Group to provide oversight on proposed asteroid deflection missions. In 2012, the foundation announced it would design and build a privately financed asteroid-finding space observatory, the Sentinel Space Telescope, to be launched in 2017–2018. Once stationed in a heliocentric orbit around the Sun similar to that of Venus, Sentinel's supercooled infrared detector would have helped identify dangerous asteroids and other NEOs that pose a risk of collision with Earth. In the absence of substantive planetary defense provided by governments worldwide, B612 attempted a fundraising campaign to cover the Sentinel Mission, estimated at $450 million for 10 years of operation. Fundraising was unsuccessful, and the program was cancelled in 2017, with the Foundation pursuing a constellation of smaller satellites instead.The B612 Foundation is named for the asteroid home of the eponymous hero of Antoine de Saint-Exupéry's 1943 book The Little Prince.
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