Nasa aims to move Earth

Cosmic Dancer · 08-02-2009, 08:58 PM

Special report: the following article is from Robin McKie, science editor of The Observer

Scientists' answer to global warming: nudge the planet farther from Sun

Scientists have found an unusual way to prevent our planet overheating: move it to a cooler spot.

All you have to do is hurtle a few comets at Earth, and its orbit will be altered. Our world will then be sent spinning into a safer, colder part of the solar system.

This startling idea of improving our interplanetary neighbourhood is the brainchild of a group of Nasa engineers and American astronomers who say their plan could add another six billion years to the useful lifetime of our planet - effectively doubling its working life.

'The technology is not at all far-fetched,' said Dr Greg Laughlin, of the Nasa Ames Research Center in California. 'It involves the same techniques that people now suggest could be used to deflect asteroids or comets heading towards Earth. We don't need raw power to move Earth, we just require delicacy of planning and manoeuvring.'

The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams, involves carefully directing a comet or asteroid so that it sweeps close past our planet and transfers some of its gravitational energy to Earth.

'Earth's orbital speed would increase as a result and we would move to a higher orbit away from the Sun,' Laughlin said.

Engineers would then direct their comet so that it passed close to Jupiter or Saturn, where the reverse process would occur. It would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated...

The rest of the article may be found here:

http://www.guardian.co.uk/environmen...techange/print

08-02-2009, 08:58 PM	#1
Cosmic Dancer Avalon Senior Member Join Date: Oct 2008 Location: Montreal, Canada Posts: 69	Nasa aims to move Earth Special report: the following article is from Robin McKie, science editor of The Observer Scientists' answer to global warming: nudge the planet farther from Sun Scientists have found an unusual way to prevent our planet overheating: move it to a cooler spot. All you have to do is hurtle a few comets at Earth, and its orbit will be altered. Our world will then be sent spinning into a safer, colder part of the solar system. This startling idea of improving our interplanetary neighbourhood is the brainchild of a group of Nasa engineers and American astronomers who say their plan could add another six billion years to the useful lifetime of our planet - effectively doubling its working life. 'The technology is not at all far-fetched,' said Dr Greg Laughlin, of the Nasa Ames Research Center in California. 'It involves the same techniques that people now suggest could be used to deflect asteroids or comets heading towards Earth. We don't need raw power to move Earth, we just require delicacy of planning and manoeuvring.' The plan put forward by Dr Laughlin, and his colleagues Don Korycansky and Fred Adams, involves carefully directing a comet or asteroid so that it sweeps close past our planet and transfers some of its gravitational energy to Earth. 'Earth's orbital speed would increase as a result and we would move to a higher orbit away from the Sun,' Laughlin said. Engineers would then direct their comet so that it passed close to Jupiter or Saturn, where the reverse process would occur. It would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated... The rest of the article may be found here: http://www.guardian.co.uk/environmen...techange/print