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.

Filter by
Sorted by
Tagged with
0
votes
0answers
15 views

Does magnetosphere always conserve the magnetic flux? [closed]

Can someone explain to me whether the Magnetosphere always conserves the magnetic flux?
1
vote
4answers
104 views

How can the mass of the sun be determined without using Kepler's law or gravitational lensing?

Can the mass of the sun be determined using the abundance of elements or alternative methods? It would be better to ask the question like this if we assume that I have an object that contains baryonic ...
0
votes
3answers
51 views

Gravitation in solar system [closed]

What would happen to Earth’s motion if the Sun’ gravity was magically turned off? Assume that there are no other objects around.
0
votes
0answers
40 views

Where can I find the true anomaly of the planets on Jan 1st 2000?

I am trying to code a simulation of the solar system. At present, all the orbits seem correct but I'm placing the planets at their respective periapses at the start of the simulation so the relative ...
1
vote
0answers
44 views

How can I estimate local solar time from direct solar radiation, knowing only latitude and longitude?

If I know the location (latitude and longitude) of a panel that measures solar radiation (in $\mathrm{W/m^2}$) and that it is at $0$ degrees to the horizon (i.e. facing skyward), can I estimate the ...
0
votes
0answers
37 views

Why do Solar Systems form in a disc shape? [duplicate]

This has been asked before, but I still don't get some points about all this. From what I've gathered so far, it's something like this: A molecular cloud with some initial spin starts collapsing due ...
2
votes
1answer
175 views

Is there still an anomalous precession in Mercury's orbit that GR doesn't predict?

I was reading through the Wiki pages on tests of relativity and I was curious about this section. Am I interpreting it correctly? Is there still about $1.21''/\text{ cy}$ of precession (Total ...
0
votes
1answer
111 views

How much energy per area or volume is the solar wind producing?

Would it be possible to erect essentially a giant loop of wire in interplanetary space to create an electric generator? If so, how much power can we get?
0
votes
0answers
36 views

Is the Sun losing mass and pushing the Earth further away? [duplicate]

With the sun radiating so much energy every millisecond can nuclear fusion keep up with that pace? And if it can’t keep up isn’t the sun losing energy every second and therefor losing mass? Which ...
0
votes
0answers
32 views

Gravitational force time of application

Suppose I have the Sun, Jupiter and Saturn, and consider just the perturbations of Saturn on Jupiter orbit. I was wondering how much can it take to consider Jupiter orbit actually different from the ...
0
votes
1answer
36 views

Why does Grand Solar Minimum occurs?

Recently I was reading about the Little Ice age that happened in 13th to 19th century that caused mild summer and bitter winters ( also known as Grand Solar Minimum (GSM ). How did this occured?
1
vote
0answers
13 views

How are the layers of a solar cell stacked together?

Do manufacturers of solar cell use an adhesive to bind the n-type and p-type layers of a solar cell?? Or do they simply rely on the smoothness of the surfaces of the individual layers to contact each ...
25
votes
7answers
4k views

Why didn't the debris collapse back into the Earth at the time of Moon's formation?

The most accurate theory for the formation of our moon is the Giant impact hypothesis, which says that a Mars sized body collided with our early Earth and after this collision all the debris got ...
1
vote
2answers
40 views

How are the locations of solar system planets expressed in their orbits?

and where can I find the data about the locations of the solar system planets during their entire year? I would like to find the data on the orbits of solar system plantes. Also I would like to know ...
3
votes
2answers
130 views

Kepler problem: Time spent by a comet inside the orbit of the Earth [closed]

This is was an exercise on my exam of classical mechanics which I couldn't solve. The question goes as follows: Imagine a comet moving on a parabolic orbit in the plane of the earth. Take the earth's ...
1
vote
2answers
60 views

Gravitational collapse of a gas/dust cloud into a disk and subsequent evolution (minimizing energy?)

Assuming a relatively isolated cloud of dust and gas with a well-defined total mass and well-defined net angular momentum. Perhaps also assume that the size (or density) of the initial cloud is ...
1
vote
0answers
38 views

I don't understand why my graph of the variance of the Sun's true noon is so bumpy

I understand that the true noon, defined as the sun reaching its highest point in the sky, varies from the noon we have on our clocks. I understand the impact that the eliptic orbit has on the speed ...
0
votes
0answers
20 views

How to not change the shape of the orbit of a planet while increasing or decreasing the size(perimeter) of the orbit?

I want to know if I can fast forward planetary movement by putting a planet closer to its star so that the planet can move faster but the shape of its orbit remains the same?
0
votes
1answer
45 views

If the mean temperature of the earth increased significantly, how this would affect the earth's angular velocity?

I was wondering, if somehow the temperature of the earth increased singificantly, how would this affect the period of rotation and angular velocity. I mean the earth would expand and this would also ...
0
votes
1answer
51 views

How to estimate the minimum radius of asteroid the rocky portion of which melted due to radioactive decay?

One of the mechanisms for the heating of asteroids in the early history of the Solar System is believed to be decay of the isotope ${}^{26}\mathrm{Al}$. This was created by the supernova that produced ...
0
votes
1answer
51 views

$N$-Body Solar System Simulator - Why are there inaccuracies in the $x$ plane but not the others? [closed]

I have written a basic $N$-Body simulator that simulates the motion of the planets in the solar system. The system reads the positions and velocities of the planets at a given time, measures the time ...
-1
votes
1answer
71 views

Why is the Sun the centre if relativity is true? [duplicate]

I thought a bit about this, and got confused as to why we always claim the Sun is at the centre of the solar system since relativity tells us that there is no preferred frame of reference. A person ...
1
vote
0answers
31 views

Black hole mergers vs formation of the solar system

I understand there are questions about how black holes can collide and how the solar system formed. Angular momentum should prevent both. It isn't well understood how either one loses their initial ...
0
votes
1answer
50 views

Why does the rotation axis of the Earth wobble over time?

I've learned recently that the rotation axis of Earth (axial tilt or obliquity) oscillates between 22.1 and 24.5 degrees. I would like to understand why does that happen. Having a basic understanding ...
4
votes
2answers
94 views

Is “the earth moves around the sun” a case of Occam's razor?

This question is a bit more meta and non-straight forward than it might appear on first glance. I recently saw Why The Speed Of Light Is Unmeasurable, which is actually about why the speed of light ...
3
votes
2answers
74 views

Why is the universe so stable and consistent? [closed]

Why is it we can discover patterns? Like math, chemistry, physics, biology, etc. Why does the universe never fail us? For example in one second I'm standing next to you, the next I'm still standing ...
0
votes
0answers
32 views

Distance between Earth and Sun - Derivation of Equation

While reading a textbook about the solar position of the earth I came across an equation that can't find its derivation. j = d 2 pi / 365.2422 𝜀 ≈ 0.03344 cos(j - 0.049) 𝑟0/𝑟 = √(1 + 𝜀) I think it ...
2
votes
2answers
46 views

How much watts per square meter does Phobos receive from Mars?

Being so close to Mars, Phobos should receive a non-negligible amount of irradiance from Mars. Be it from reflected sunlight, Mars' emitted infrared radiation, or other factors. I have no idea how to ...
1
vote
3answers
25 views

Is the compass direction of a planet recorded by two different observers separated by some distance the same?

I have a basic doubt. Say I am viewing Mars from my window and I used the compass app to get an approximate 2D direction. If at the same instant another person also observes Mars from their window. ...
0
votes
3answers
427 views

Tilting of Earth rotational axis

In which way do the Earth's rotational axis tilted 23.5°. see in the image we have been told that the axis of rotation of Earth is tilted 23.5° from the perpendicular to path. But can anyone say in ...
1
vote
3answers
78 views

How well can we measure how fast are we spinning?

Although absolute translational motion is meaningless and unmeasurable (Michelson and Morley, etc), absolute rotational motion is meaningful (Newton's bucket) and measurable, using Foucault's pendulum....
-1
votes
1answer
305 views

Why is it that Mercury is considered a planet, Pluto was once considered a planet, but Callisto is not considered a planet? [closed]

Mercury is 15 329 km in circumference. Pluto is 7 232 km in circumference. Callisto is 15 144 km in circumference. So why is it that Mercury is considered a planet and Pluto was once considered a ...
0
votes
1answer
44 views

What are the sources of error in the formula I derived to estimate sunrise and sunset times, and how can I improve its accuracy? [closed]

I derived the following formula to estimate sunrise and sunset times: $$ t=\pm\cos^{-1}\frac{\sin\theta-\sin L_{loc}\sin L_{sun}}{\cos L_{loc}\cos L_{sun}} $$ $L_{loc}$ is the local latitude $L_{sun}$...
2
votes
0answers
29 views

Is Jupiter really protecting us from collisions with objects?

Many documentaries I see on the Solar System or the planets or the threat of collisions with meteorites talk about how lucky we are to have Jupiter, with its immense gravity attracting asteroids to it ...
0
votes
1answer
34 views

Are there any effect of Sun to the tide? [duplicate]

The Earth is rotating for the Sun's gravitational field. Like a free falling object Earth should feel zero gravity to the Sun. So why there are effect of Sun to the tide?
2
votes
1answer
69 views

Why is the predictability of the solar system in the Lyapunov timescale limited to 5 million years?

Is this due to a mathematical problem that is not solved? Or could this be due to our current amount of information regarding mass and other such factors in our system?
1
vote
1answer
63 views

Equations for developing a hypothetical Solar System

I am currently going down the rabbit hole of writing a story but I would like it to be set in a universe which is believable. Therefore I am trying to create a hypothetical solar system in which the ...
0
votes
2answers
34 views

Do we have to care about the force from the Milky Way black hole while analysing the Solar system from its Center of Mass frame?

And also while analysing Earth's spinning motion about its center? Do we have to care about the forces from the giant Black Hole at the center of Milky way? I guess we would have to take the Black ...
1
vote
1answer
176 views

Why does the Earth not spiral into the Sun if it is charged?

The Rutherford Model of the atom was similar to the solar system. The major drawback of the model was that it was not consistent with maxwell's theory of electromagnetism which stated that : All ...
1
vote
3answers
133 views

Why didn't heavier elements settle at the core of the solar system?

As the solar system formed, why didn't all of the heavier elements such as iron, collect where the sun is leaving the lighter elements in the outer solar system?
0
votes
1answer
26 views

Dark matter distribution and solar systems

If it's lack interaction keeps dark matter from behaving like matter and ending up distributed like matter. Then why did it gather at the galactic gravitational well in the first place and why end up ...
-1
votes
1answer
27 views

Interaction of the magnetic bubbles at the edge of the heliosphere and the Earth's magnetic field

I'm going to ask about if there is some effect/interaction of the magnetic bubbles that are explained in [1] from YouTube and the Earth's magnetic field. I know these subjects from an informative ...
15
votes
6answers
3k views

What's the actual path of the planets?

I read about Kepler's Laws and in one of them he mentions that the path of a planet is an ellipse, with the sun as one of its foci (I'm narrowing down this to only our solar system). However though I'...
-2
votes
2answers
464 views

Why do we say that the torque on Earth due to Sun is zero?

Let's assume, the mass of Earth = $M$, the radius of Earth = $r$, the moment of inertia due to revolution of Earth = $I$, angular momentum due to the revolution = $L$, distance between the center of ...
0
votes
1answer
100 views

Are the orbits in my simulation correct? [closed]

I'm creating a simulation of our solar system. I used data from https://nssdc.gsfc.nasa.gov/planetary/factsheet/ and I supplied the planets with perihelion and aphelion values. But I'm afraid the ...
1
vote
1answer
53 views

Planar Mercury Orbit

Recently we had an exercise about the precession of Mercurys perihelion. It went like this: Using the Schwarzschild-solution of Einsteins field-equations, we can derive the Lagrangian for a test ...
0
votes
1answer
63 views

Orbit eccentricity and initial velocity

I was thinking about orbital velocities, and came across this question (Velocity of satellites greater than required velocity). Does the answer to this question imply that for planets going round the ...
1
vote
2answers
82 views

Help understanding why Newtonian mechanics doesn't allow planets to follow Rosetta orbits

The argument I am trying to understand is the following: For an orbit to be closed, the angle between successive perihelions (points where the planet at its closest to the sun) must be a rational ...
0
votes
0answers
9 views

Does increasing the atmosphere of Mars cause dust storms to last longer?

This is both a science-fiction question (assuming some terraforming of Mars[crashing asteroids could be fun]) and a physics question about dust particles being carried by the martian winds. Some dust ...
0
votes
0answers
12 views

Expansion of the Universe (within galaxies) [duplicate]

We know that the universe is expanding. The galaxies are moving far away from each other. But what is happening inside those galaxies or inside the solar systems? Is our Earth moving further away from ...

1
2 3 4 5
12