The Slingshot Effect - something that bounces back. We have gone as far as we can go in linear time and are about to bounce back to our point of origin, the eye.

The Dust in God's Eye MSNBC - February 11, 2007

Gravitational Slingshot

In orbital mechanics and aerospace engineering, a gravitational slingshot or 'gravity assist' is the use of the gravity of a planet to alter the path and speed of an interplanetary spacecraft. The slingshot effect is used to accelerate a spacecraft in a planetary flyby. NASA calls this a gravity assist, and exploits it to save fuel in missions to outer planets such as Jupiter and Saturn.The planets continue in their orbits unaffected, and so at first sight this seems like something for nothing, a cosmic perpetual-motion trick. But the physics is straightforward, resting only on conservation of momentum and of energy -- and involving the huge mass ratio between planet and spacecraft.

The Slingshot effect, also known as the Light-speed breakaway factor, is a method of time travel that requires a starship to travel at warp speed towards a star. As the ship approaches the star, it begins to travel back in time, using the gravitational field of the star, then breaking free the starship is sent forwards or backwards in time. It requires very precise calculations - variables include availability of fuel components and vessel mass through a time continuum.

This method was used by Captain Kirk and his crew of the USS Enterprise at least twice to return to 23rd century after being hurtled back in time to 20th century Earth. (TOS: "Tomorrow is Yesterday", "Assignment: Earth") Kirk and his crew applied the slingshot effect again in 2286, using a hijacked Klingon Bird-of-Prey to travel back to Earth in the latter half of the 20th century, although this subsequently drained the Bird-of-Prey of most of its power. There, they retrieved two humpback whales and brought them back to their own time so they could respond to an alien probe that was threatening Earth in the 23rd century. (Star Trek IV: The Voyage Home)

Uri Geller

The sun is expanding and eventually the Earth will be toast. However, scientists have come up with a cunning plan. Forget the ozone layer. If you thought global warming was caused by pollution and rampant deforestation, get set to be scared - Earth has a bigger problem. The sun is expanding. The fireball that is mildly overheating us right now will toast us, then roast us to cinders, then engulf us. This isn't a piece of apocalyptic astrology but the conclusions of a study by astronomers Don Korycansky of the University of California, Michigan University's Fred Adams and Gregory Laughlin of NASA.

Luckily, the scientists have come up with an answer. As the sun gets hotter, all we have to do is move the Earth. They calculate that an asteroid 62 miles across, passing close to our orbit, would bounce us further into space like a billiard ball. It's called the 'slingshot effect' and is the same high-velocity physics which saved the astronauts of the Apollo 13 mission when they used the Moon's gravity to hurl themselves back to Earth. All we have to do is find the right asteroid and deflect it towards us. We'd better get the aim right, because if a 62-mile wide lump of inter-planetary rubble slams into Yorkshire, none of us will have to concern ourselves with global warming anymore.

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