Bolden's comment Fifa 14 Ultimate Team Coins sought to illustrate to the US governmentthat without significant improvements to current technology thatsearches the skies for near-Earth objects, there is nothing thatcan be done to prevent an event similar to Chelyabinsk, Russia,happening again.
The series of talks were prompted by the events that unfolded on 15 February over Chelyabinsk, whenan asteroid approximately 18 metres in diameter crashed through theEarth's atmosphere and exploded. The resulting shockwave blew outwindows and injured over 1,000 people. By total coincidence, 2012DA14, an asteroid measuring 30 metres, passed within 28,500km ofEarth -- within the orbit of telecommunications satellites. Theevent also resulted in Russia reconsidering their own asteroid defence programme.
On 20 March, another group of Nasa scientists briefed the USSenate Subcommittee on Science and Space with a talk titled Assessing the Risks, Impacts, and Solutionsfor Space Threats.
没有评论:
发表评论