Про теорию гравитации

[KP580BE51]

http://www.pheedo.com/click.phdo?i=c328 ... a094c8f16f

This artificial system would reside inside a spacecraft that would be sent to the L2 Lagrange point (see image, below right). That point lies about four times as far away from Earth as the Moon does.
A spacecraft placed there would stay fixed in space, relative to Earth, making it easier to monitor. The Earth would also shield it from the Sun's radiation, which pushes gently on any objects it shines on. Any such push could change the spacecraft's position relative to the tiny "planets" held inside it.
Once at the Lagrange point, the artificial solar system would be set in motion inside the spacecraft. An 8-centimetre-wide sphere of tungsten would act as an artificial sun, while a smaller test sphere would be launched 10 cm away into an oval-shaped orbit. The miniscule planet would orbit its tungsten sun 3,000 times per year.
Higher dimensions
If gravity is leaking into extra dimensions, the slight change in its force should cause the planet's oval-shaped orbit to rotate, or precess, slowly. Sahni and Shtanov calculated the effect for a theory called the Randall-Sundrum model, which says that our universe is a 3D slice of a bigger, higher dimensional universe. They find the orbit would precess by 1/3600° per year - "a reasonable quantity to try and measure," they say.

[Flash-04]

кстати Лагранжевы точки L1, L2, L3 неустойчивы.

[KP580BE51]

кстати Лагранжевы точки L1, L2, L3 неустойчивы.

Все они ИМХО не устойчивы. Как monopod. Но ножка длинная очень. Авось и не свалится за пределы тени за пару лет.

[Иоп]

Что-то я не понял, а космос-то там причем? Где они симметричный корабль возмут?

[Flash-04]

Где они симметричный корабль возмут?

сбацают

[venco]

кстати Лагранжевы точки L1, L2, L3 неустойчивы.

Все они ИМХО не устойчивы. Как monopod. Но ножка длинная очень. Авось и не свалится за пределы тени за пару лет.

The L4 and L5 points are home to stable orbits so long as the mass ratio between the two large masses exceeds 24.96. This condition is satisfied for both the Earth-Sun and Earth-Moon systems, and for many other pairs of bodies in the solar system.

[Hamster]

Although the L1, L2, and L3 points are nominally unstable, it turns out that it is possible to find stable periodic orbits around these points, at least in the restricted three-body problem. These perfectly periodic orbits, referred to as "halo" orbits, do not exist in a full n-body dynamical system such as the solar system. However, quasi-periodic (i.e. bounded but not precisely repeating) Lissajous orbits do exist in the n-body system.

http://en.wikipedia.org/wiki/Lagrange_points#Stability