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Questions tagged [solar-system]

The Sun plus the collection of bodies in orbit around the Sun such as planets, dwarf planets, moons, asteroids, comets, etc.

0 votes
1 answer
42 views

Does the Earth’s Geoelectric field affect its orbit around the Sun?

https://en.wikipedia.org/wiki/Atmospheric_electricity https://www.sciencedirect.com/topics/earth-and-planetary-sciences/geoelectric-field Is the interaction between the electric field of the Sun and ...
shawnny321's user avatar
19 votes
1 answer
2k views

I'm trying to replicate Rømer's experiment but can't seem to get even close to the correct value for the speed of light

I am trying to replicate Rømer's experiment where he determined the speed of light by observing and measuring the eclipse timings of Io by Jupiter. I'm using Stellarium for this experiment and no ...
RugbyRene's user avatar
  • 191
25 votes
2 answers
3k views

Is it possible to know where the Sun is just by looking at the Moon?

A nine year old child asked me if it is possible to know where the Sun is located just by looking at the Moon from the Earth. I said I don't know, that I only know that the lunar surface reflects the ...
Viktor K.'s user avatar
8 votes
3 answers
2k views

Does General Relativity predict Mercury's orbital precession without other planets?

From Newtonian mechanics, the precession of Mercury can be calculated by taking into account the gravitational pull of other planets. From that, I assume that in the absence of external planets, ...
Stallmp's user avatar
  • 779
3 votes
2 answers
810 views

Wondering about ancient methods of estimating the relative planetary distances

Regarding https://physics.stackexchange.com/a/156155/349202 and estimating with geometry the relative distance of Venus to the sun prior to the Venus transit of 1769, I follow the logic of @viktor-...
AtomPages's user avatar
2 votes
3 answers
108 views

What is the reason that the unstable Lagrange point $L_2$ is used for the JWST instead of the stable $L_4$ or $L_5$ points?

I understand how the Lagrange points work in the two-body problem. I can do that math. I understand that for L1, L2, or L3, if the object is perturbed to deviate away from that point, the ...
robert bristow-johnson's user avatar
-1 votes
2 answers
85 views

About Relativistic time in different planets and moons [duplicate]

Since the planets and moons in the Solar System has diferent gravitational fields, What happen to the relativistic course of time if we compare it to an absolute Newtonian time or in other words ...
Juan Millas's user avatar
1 vote
3 answers
105 views

Do all the planets orbiting a star lie in one plane? [duplicate]

If you look at our solar system and our galaxy, the stars and planets are generally all in one plane. So, are all galaxies in one plane? And why are they in one plane?
user avatar
0 votes
0 answers
33 views

Kepler's measurements in solar system

I am interested in knowing that does Kepler measured distances in solar system or only relative distances to a astronomical unit which he doesn't know how long is it in our meters.
moshtaba's user avatar
  • 1,419
0 votes
1 answer
80 views

Could dark matter be responsible for periodic comet impacts on Earth?

I've been reading a fascinating paper by Lisa Randall and Matthew Reece on the potential role of dark matter in triggering periodic comet impacts on Earth, possibly linked to mass extinctions. The ...
Lagrangiann's user avatar
-1 votes
1 answer
61 views

Relation between Earth's and Sun's magnetic axis relative to their paths of travel and relative to each other?

Pretext As non-educated citizen with no academic background, and based on watched PBS Space Time's latest video I've got curious, what's the relation between Earth's and Sun's magnetic axis relative ...
xray0's user avatar
  • 540
0 votes
1 answer
50 views

The magnetic force between the earth and the sun

There is a magnetic field around the earth and a stronger one around the sun. I guess there should be a magnetic force between the sun and earth. Now, shouldn't we take the magnetic force into account ...
Future Math's user avatar
0 votes
1 answer
88 views

Questions about speed of gravity [duplicate]

If gravity "travels" at $c$, and the sun is travelling "forward", does it mean the planets are actually orbiting various points "behind" the center of the sun? Does it ...
Curious Steve's user avatar
1 vote
0 answers
19 views

Is there ways to find the most efficient geometrical structure for sunlight concentration? [closed]

we are researching for the most efficient geometrical structure of a concentrator. What we mean by 'most efficient' is that we are trying to get the most sunlight while sun is up. We are not trying to ...
sasa boy's user avatar
-6 votes
1 answer
61 views

Why sun revolve around the sun ? Why cant it just rotate ? ( gravitas attraction force makes it revolve , how?) [closed]

Why the revolution ? How General relativity theory explains it
Rumana Izzath's user avatar

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