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Questions tagged [lagrange-point]

Questions on any of the 5 locations where a small object can maintain a stable orbital configuration with respect to two co-orbiting larger bodies.

3 votes
1 answer
627 views

Is there an L2 Lagrange point for Mercury that lies in the shadow?

Or is it just too far away to be shadowed from the photosphere of the sun? Just wondering if some futuristic science/observation station could ever be placed there. I know about the polar craters that ...
11 votes
2 answers
4k views

Worthwhile to put a telescope on the far side of the Sun?

Are there any plans to place a telescope satellites on the far side of the Sun at the L3 Lagrange point? I think it would be useful for a number of reasons. It would cover our blind spot for incoming ...
3 votes
0 answers
60 views

Lagrange points for figure eight orbit

The figure 8 orbit is the only known stable orbital configuration for 3 bodies of equal mass. Are there islands of stability, analogous to Lagrange points for 2 orbiting bodies, that trace their way ...
7 votes
2 answers
1k views

How can Earth-Sun Lagrange points L1 & L2 even be semi stable considering the moon?

I know that the Earth-Sun Lagrange L1, L2, and L3 points are not considered stable over longer periods, especially when compared to L4 and L5... But, with the moon orbiting the Earth in the general ...
7 votes
2 answers
261 views

Area of Influence of Lagrange points?

By which I mean, the area around a Lagrange point where the linear-force approximation of the 3-body system defined at the Lagrange point itself is "good". Background Consider the restricted ...
1 vote
0 answers
67 views

Is there a specific area on the far side of the moon, directly below the L2 Lagrange point in the Earth/Moon system?

It seems like there should be, and if so I wonder how large an area it is, if it changes size over time, and if it moves or wobbles in some way. On the latst point, I imagine it would certainly wobble ...
5 votes
2 answers
1k views

Time in 0 gravity points

If being close to a supermassive body like a black hole makes time pass more slowly for us than for an observer from a point of view with a weaker gravitational field, if we get to be at a point in ...
8 votes
1 answer
1k views

Can dark matter accumulate at Lagrange points?

Interplanetary dust can accumulate at Lagrange points . "Kordylewski cloud - Wikipedia" https://en.m.wikipedia.org/wiki/Kordylewski_cloud But can dark matter accumulate at Lagrange points ...
0 votes
0 answers
39 views

Lagrange points and Laplace equation boundary condition

I have been reading about Lagrange points and Lagrange regions and how we can apply Laplace's equation for these regions however which are the boundary conditions of the Laplace equation at these ...
2 votes
1 answer
100 views

largest balanced mass objects in Earth's L4 & L5 Lagrange points?

What is the largest single-object mass that would allow two objects of equal mass to have a stable orbit, one each, in Earth's L4 and L5 Lagrange points?
2 votes
2 answers
89 views

Can a satellite at lagrange point be stabilized with gravity gradient?

Assuming that the satellite is big enough and the it is at the Lagrange point between the Earth and the Sun, can this satellite be stabilized with gravity gradient? (which means, can this satellite ...
1 vote
2 answers
283 views

Do the Sun's rays get focused at or near the L1 Lagrangian point?

I have seen so many schematic pictures of eclipses (solar and lunar), and in all of them, the Sun's rays are focused at a specific point (left of the Earth in lunar eclipses and a slightly left of the ...
2 votes
1 answer
177 views

Would an accumulation of dust in a planet's L1 Lagrange point plausibly obscure it from Earth?

I'm designing a hypothetical newly discovered planet in our solar system that has an ecosystem comparable to Earth's that supports intelligent life. The explanation given for the planet remaining ...
2 votes
3 answers
4k views

Is there a Lagrange point between the earth and the moon?

Is there a Lagrange point between the earth and moon where a space station could sit forever without orbiting around either? Just curious, but it seems like a place like that would be perfect for ...
5 votes
1 answer
195 views

Do any equivalent of Lagrange points exist between galaxies?

I'm wondering whether there is a similar effect between Galaxies as we have between a planet and it's star. I know there are tidal waves between galaxies and that gravity seems to always be attractive ...

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