Solar system Definition and 311 Threads

Whether I actually let a gamma-ray burst hit the solar system in my sci-fi story or not, at least the looming threat of this event will shape the plot in major ways. Therefore, I need to accurately predict the effects of such an event on not only Earth itself, but also the rest of the solar...

There are some hints from the orbits of known objects in the solar system that there might be a Planet X out there that has not been discovered. A recent study by Siraj et al. (the link is to a pre-print of the paper), analyzes a bigger data set (orbits of 51 objects v. 11 in previous studies)...

Why Venus is hotter than Mercury In the video linked to above, the author explains why Venus, though it's farther away from the sun, is hotter than Mercury. It squares with what I read thousands of years ago. I hope the explanation is correct. If the video is accurate then I have a question. Is...

There is an "Ecliptic coordinate system" that represents the apparent positions, orbits, and pole orientations of Solar System objects. But, the Sun itself is NOT having a fixed immovable positon: - It moves around the barrycenter of the solar system - It also revolves around the central black...

Just looking for terminology here. If an object moves through the solar system, what is the simplest terminology that relates to how the object moves through the solar system? What are the words for if an object moves towards the sun (radially inwards) away from the sun (radially outwards)...

Was reading about a simulation and there isn't any mention about what amount of time it takes to start and to run. Since they're potentially on a supercomputer, maybe not a long time. I have no idea what to expect though. Do you sit at it like a regular desktop and press play, then it starts...

TL;DR Summary: Solar sytem forces on Unity Hello ! For my last year in my school, I've got a project to do, and I wanted to recreate the Solar system with forces on Unity. My forces are Velocity and Acceleration (I'm using the Frenet's formulas). I'm sorry I'm not a physicist and that's why...

As the title asks, does the invariable plane of the Solar system have axial precession? And if so, how much and at what rate? I have tried to find an answer to these questions for a while now, but still haven't found any. I recently asked on reddit too, which pointed me to some speculation...

Scientists find the source of one of the rarest meteorites to fall on Earth https://www.msn.com/en-us/news/technology/scientists-find-the-source-of-one-of-the-rarest-meteorites-to-fall-on-earth/ar-AA13ejQe Terrestrial modification of the Ivuna meteorite and a reassessment of the chemical...

Was just wondering if there is anything fundamentally preventing a system of planets being in permanent orbit around a black hole, without ever spiralling in. Assuming that the black hole doesn't absorb any significant amount of additional mass. Of course I know it wouldn't provide any energy to...

Hey'all. First of all, I'm not fluent in English, so forgive me for the spelling mistakes. So, I'm trying to make a simulation of a solar system using python 3.9. It's not complicated, but my teacher wants me to do it using the Basic Verlet method, and that's what is bugging me. He told me do do...

I am trying to come to terms with the two concepts of gravity, direct attraction between bodies (say dust even) and attribution to the curvature of space (time) Looking at a physical sea coast I can envisage how every instance of the mass gravitational interactions of individual atoms or smaller...

I'm pretty confused by this but I have a few thoughts. Since the sun takes up most of the mass of the solar system, I was thinking maybe I'm really looking for the escape velocity of the sun? So I would use the mass of the sun for M and the radius of the sun for r. My other thought was to add up...

Relevant formulae:- Angular velocity in uniform circular motion ##=## ##\omega## ##=## ##\frac {2\pi} t##, where ##t## is the time taken to complete one revolution. Centripetal acceleration in uniform circular motion ##=## ##a## ##=## ##\omega^2r##, where ##r## is the radius of the circular...

does anyone have a good reference on the history of calculating the standard gravity parameters of solar system bodies? My guess is a rough estimate of Jupiter's SGP can be gained from observing the motion of its moons, in which case the first estimates could have been made soon after Newtonian...

... by a factor of 10, then would it operate exactly the same way as if it did not contract? I ask this because there could be an observer at a sufficient speed for which our solar system contracts by a factor of 10. Wouldn't our solar system and its contents have to behave differently for the...

These are the two snapshot (on Stellarium) of the Third Contact between Venus and the Sun at the same time at different locations on Earth. The top image is viewd from Quito, Ecuador, the bottom image is from Harrisburg. I am supposed to determine the parallax. The angles were calculated using...

I start this thread about a comet that probably (hopefully) will be of common interest in the coming months (or years). And, no, Earth orbit will not be affected. https://arxiv.org/pdf/2109.09852.pdf

Alright, so I have a question. Now, on planets such as our Earth, there are a longitude and latitude as well as altitude. If I am not mistaken, I believe the latitude and altitude are part of what affects gravity, or weight, on a planet. Latitude makes it so that the object in question is...

I'm very much an amateur with a keen interest in space/the universe and it occurred to me the other day that our solar system could have been formed in exactly the same way that it is hypothesised that the Moon/Earth system formed through the (proposed) collision of Theia and the proto-Earth...

Could the existence of the 9th planet of the solar system is possible under these arguments of existence of it some where in the out scurt of solar system? The evidence for Planet 9 comes from its gravitational pull on other bodies. If the planet exists, its gravity will affect the orbits of...

Which is a higher entropy state: solar system as it is today with planets going around the sun at fixed distances in an orderly fashion OR all the planets and sun bumping into one another and forming a single body? If the entropy of the combined single body is higher, why doesn't the solar...

I was cleaning out my email archive after being notified I was out of storage. I decided to keep these. Enjoy. (original at: https://dingo.care2.com/cards/flash/5409/galaxy.swf) This one would be impossible on a phone and slow on a laptop, use a fullsize computer if available. I couldn't...

On page 50 of "From eternity to here", Sean Carroll writes that the protostellar cloud had a lower entropy than the solar system it produced. That strikes me as odd. A solar system looks more arranged than a dust cloud. When talking about entropy, someone always mentions the milk in the coffee...

I have read articles about the Voyager probes leaving the solar system (or not) depending on what definition is used. So, another definition - do the Voyagers have sufficient velocity to escape the Sun's gravitati0nal influence?

What is the method of calculating the diameter of a solar system knowing each of its planets distance to the star? Is it a matter of doubling the distance of the furthest planet? What about when a solar system has more than one star?

Hello, We know that most celestial objects in our solar system are in the equatorial plane of the sun. So too, does most of our spacecraft orbit in this plane as it explores our solar system. For a spacecraft already traveling away from the sun and towards the outer solar system, how hard...

It seems to me that Galileo and his successors benefitted from there being other bodies in the solar system other than the Earth and the Sun to prove that the Earth (and other bodies) orbited the Sun, and not the other way round. In an imagined solar system where the Earth has no moon, and...

I cannot understand the solution at https://www.aapt.org/physicsteam/2015/upload/E3-2-5-solutions.pdf, because the solution is terse and skip steps (at least i think so). I figured out that the name of this transfer is "Hohmann-Transfer Orbit". A detailed walkthrough would be appreciated. If I...

Why is it that all of the planets in our solar system (to our knowledge) orbit the sun in such a way that they all go around the sun in roughly similar orbital planes? Why don’t we have planets with orbital planes at significantly different angles?

If I take away the planets in the solar system and leave the sun alone, would the sun have less energy than before?

Stumbled across this and found it interesting. Solar System Dynamics pages at JPL (Jet Propulsion Lab)/NASA. Has Bodies, Orbits, Physical Data, Tools, etc. https://ssd.jpl.nasa.gov/?site_map Cheers, Tom

I am writing a space opera, that is meant to be hard, except some alien magic. So far, i have the following points : asteroid belt is the most valuable for rare material mining, there they live in O Neil cylinders. Travel is done by fusion ships, that can maintain miliG-s of constant...

Hi! I have read that cometary nuclei have a very low albedo, even lower than coal or asphalt. Because of this, they absorb lots of light and heat rather than reflecting them. So I was wondering how hard is it to detect extinct comets. Could the solar system be full of dead nuclei buzzing around...

OK, this is more on history of astronomy than anything else. I hope someone has an insight on how they were thinking of things back then. The Ptolemaic model of the Solar system, i.e. the Geocentric model, placed Venus inside the sun's orbit around the earth. And to account for the retrograde...

After concluding an investigation about the coriolis effect, I wondered how this phenomenon affected the solar system and in particular the moon. Since the moon is a body that moves within the rotating system formed by the sun and the earth, an apparent deviation in the moon's path would be...

Since acceleration due to Newton's law decreases as the inverse of distance, it becomes very weak at large distances. Our Sun was unable to pull in matter in the Oort cloud in over 4 billion years. Above about 0.11 light years, using modified Newtonian dynamics equations, gravity decreases by...

Hiya Hiya. I'm trying to build a solar system simulator for research purposes, and this does not seem to be all that easy. As in, my firsts tests have the moon shooting out of the solar system... I was wondering if you folks could offer some guidance. So, since it's for research, accuracy is...

Hello all! Hope everyone's been doing well! My question relates to the nebular theory of solar system formation. It is generally accepted that via the nebular hypothesis, matter in a nebula contracts on its own gravity and begins to spin, but I'm having trouble understanding why it must begin...

I am building a planet that will orbit a sun and I need help My world has 11 planes/asteroids. the planet Le Bear has multiple life forms on it. It takes 378 days to rotate around the sun. My planet has a circumference of 8199.49 miles. there are 12 months of 28 days and then 1 1/2 months of...

So Juno is on her downhill run towards Jupiter. Only doing about 8k right now, but by the time she rounds Jupiter she'll be doing 100k or more. We are going to get so much science from Juno. Personally I am eagerly awaiting the results of what Jupiter looks like under all those clouds.

If the distribution of elements in the universe is also the distribution of elements in the solar system for regular matter, and being dark matter so overwhelmingly prevalent in the universe, why can't we see it overwhelmingly in the solar system?

Does our solar system host a Ninth planet, If so has our solar system under gone planetary migration?

Homework Statement I have a project to make the Solar system on Python, which I have done, but they also require from us to calculate the total energy of the system. We don't have to make the orbits of the planets elliptical, they should be circular and I believe I made them like that. Since...

I have a project to make the solar system. I am trying to start from somwhere. On the notes it says that we need to start by creating a System of Particles Two-body simulation (Circular motion) Implement Gravitational acceleration Each particle (planet) could have its own field. I.e. Each...

Hello Dear Ones. 1. How Scientists exactly calculated movement speed of solar system ? thank you very much.

During a harmonic convergence of the major planets does the barycenter ever leave the suns sphere?

Hi All. On Tuesday I have to present my research proposal for my undergrad research. I intend to model our solar system using general relativity and compare and contrast my results with observations. Attached is my paper that I had to submit to my adviser. He suggested that I talk about some...

Hi, I am about to write a simple application, simulating in 3D current location of the planets in Solar system. Honestly, I do not know even how to start. Can you please guide me where could I find some good information on planet orbits, current locations and how to make all of the calculations...

Hey everyone, I've recently programmed an animated simulation of the main elements (core planets and Sun) of our solar system: by using the initial coordinates from the JPL database, and then calculating the combined gravitational perturbations and the relativistic effects from the Sun...