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Archives - Philly. Earth is NOT ready for an asteroid impact, expert warns. In the hope of preventing a catastrophic asteroid from colliding with Earth, a respected astrophysicist has advised that governments should be spending 'hundreds of millions' each year on defence systems. Speaking at a press conference this week, Lord Martin Rees, UK Astronomer Royal, said that humans are 'vulnerable to impacts from outside.'He suggested that a two- pronged approach would be needed to ensure Earth could survive an asteroid collision – a better detection system, and a deflection system. Scroll down for video Experts have warned that humans are not prepared for an asteroid impact, and should one head for Earth, there's not much we can do about it (stock image)NASA'S ASTEROID REDIRECT MISSIONNasa is planning an ambitious mission that will see a robotic spaceship visit an asteroid to create an orbiting base for astronauts. The robot shipwill pluck a large boulder off the space rock and sling it aroundthe moon, becoming a destination to prepare for futurehuman missions to Mars. Nasa plans to study the asteroid for about a year and test deflection techniques that one day may be necessary to save Earth from a potentially catastrophic collision. Lord Rees was speaking at a press conference in Luxembourg in the lead up to World Asteroid Day on June 3. He said: 'I think we are all aware that we on planet earth are vulnerable to impacts from outside we know evidence these have happened in the past.'It may not be the greatest risk or highest profile short term risk confronting earth, but if you make an assessment of what insurance premium it is worth paying in order to reduce impact, you would come up with a figure of several hundred million euros a year – which the world should be spending to reduce this risk.'Lord Rees advised that a better detection system, alongside a deflection system would leave Earth less vulnerable to asteroid collisions. He added: 'We know that asteroids pose risks to Earth and recent advances in sensor technology have radically improved our ability to detect and deflect these Near Earth objects.' This is not the first time that experts have warned that the Earth is unprepared for an asteroid strike. Speaking at a press conference this week, Lord Martin Rees, UK Astronomer Royal, said that humans are 'vulnerable to impacts from outside'In September, director of the Office of Science and Technology Policy, John Holdren, warned that an impact could 'do a lot of damage to the Earth.' The expert noted two catastrophic events in recent history that took the world by surprise – the Chelyabinsk strike in 2. ![]() Tunguska fireball in 1. While scientists have made great strides in detecting potentially hazardous Near- Earth Objects, Mr Holdren explained that there is still much work to be done. A thruster firing in the opposite direction would be needed to keep the spacecraft at a constant distance from the asteroid. The Ion Beam Deflection approach is independent of the size of the asteroid, and it could be demonstrated on either mission option. In the Enhanced Gravity Tractor approach, the spacecraft would first pick up a boulder from the asteroid's surface as in mission Option B. The spacecraft with the collected boulder would then orbit in a circular halo around the asteroid's velocity vector. The mass of the boulder coupled with the mass of the spacecraft would increase the gravitational attraction between the spacecraft and the asteroid. By flying the spacecraft in close formation with the asteroid for several months the very small gravitational forces would produce a measurable change in the asteroid's trajectory. A kinetic impactor could also be launched as a secondary payload with the spacecraft or on a separate launch vehicle, and it would collide with the target asteroid at high velocity while the spacecraft observed the impact. But last year, Nasa got the final go- ahead for an ambitious mission that will visit an asteroid and pluck a boulder from its surface to create an orbiting base for astronauts. A robot ship will pluck a large boulder off an asteroid and sling it around the moon, becoming a destination to prepare for future human missions to Mars. The so- called Asteroid Redirect Mission is targeted for liftoff in December 2. ![]() ![]() ![]() In finance, a foreign exchange option (commonly shortened to just FX option or currency option) is a derivative financial instrument that gives the right but not the. Account Options. Sign in; Search settings; Web History. Lord Martin Rees, UK Astronomer Royal, was speaking at a press conference in Luxembourg in the lead up to World Asteroid Day on June 30. Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device. Diet Pills 2013 Uk Qbs![]()
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