Perilous Times
Russia And Europe To Join Forces To Protect Earth From Asteroids
by Staff Writers
Moscow, Russia (RIA Novosti) Jun 25, 2010
Russian space officials and members of the European Commission will
meet in early July to discuss joining forces against thousands of
potentially hazardous asteroids, the head of the Russian Federal Space
Agency Roscosmos said.
Despite the growing concern about the asteroid threat, no anti-asteroid
defense programs have been developed in practice so far, with only
several theoretical concepts being studied. At a meeting in Moscow on
July 7, the European Commission will consider Roscosmos's proposal to
start a joint anti-asteroid project with the European Union.
"I received a letter, in which the European Commission proposes to meet
on July 7 in Roscosmos with scientists and engineers of the Federal
Space Agency, the Russian Academy of Sciences and other institutions
and organizations. At the meeting, the Russian bid to start a joint
project with the EU will be considered," Anatoly Perminov said.
In his Wednesday's report to Roscosmos, the head of the Astronomy
Institute at the Russian Academy of Sciences, Boris Shustov, said
Russian scientists had detected a total of 6,960 near-Earth asteroids
(NEAs) as of April 10.
The vast majority - 6,070 space bodies, or 87.2% of the total - are
asteroids measuring from 100 meters to 1,000 meters in diameter. Others
are 48 comets (1.2%) and 806 asteroids measuring more than a thousand
of meters in diameter (11.6 %).
However, only 1,185 of all NEAs detected have been labeled "potentially
hazardous," all of them asteroids - and 146 of them more than one
kilometer in diameter.
The Roscomos TV said on its website that calculations, based on results
of nuclear weapon tests, show that an asteroid of 1-2 km in diameter is
enough to cause a catastrophic shift in the global climate.
The collision with such an asteroid would be equal to a blast of 1
million megatons in TNT equivalent, or to 50 million bombs dropped on
Hiroshima.
The impact will form at least a 1000-km crater (or 1,000 times the
falling space body's size), while tons of dust and soot in the air will
lead to the "nuclear winter effect," or a drastic temperature drop due
to absorbed solar radiation.
"In recent years, the attention of scientists, technicians, politicians
and the military has become increasingly focused on the asteroid and
comet hazard, namely the threat of the Earth's collision with large
space bodies," Perminov said.
"It is caused by the fact that special supervision programs led to a
dramatic increase in the number of such objects being detected, and the
new information allowed to gain a new insight into the problem," he
added.
The leading space countries have already launched their projects to
track down potentially dangerous asteroids, including NASA's Near Earth
Asteroid Tracking (NEAT), Deep Space 1, Deep Impact, Dawn and Stardust,
as well as ESA's Rosetta and JAXA's Hayabusa.
More research missions are being planned, including Canada's The Near
Earth Object Surveillance Satellite (NEOSSat), scheduled for launch in
2011, and Germany's Asteroid Finder to be launched in 2012.