Solar system Definition and 307 Threads

I know that energy increases with distance, but what is the relationship? What are different ways to measure something decreasing over distance or time. I really don't have the time to help my younger sister do her homework so I need someone to help me explain to her the relationship concerning...

How does one correct for tidal forces when (classically) simulating the orbits of solar system bodies?

This article suggests that exoplanets are the same size and have equal orbital spacing ,so what is different from our solar system. https://www.sciencedaily.com/releases/2018/01/180109141918.htm An international research team led by Université de Montréal astrophysicist Lauren Weiss has...

Can anyone predict where the planets will be in 1 million years time, could the Earth be kicked out of orbit a far quicker way to die than waiting for the sun to go nova?

"There are various theories about how the solar system formed, but scientists haven't been able to agree on a single model that explains all the quirks of our corner of space as it exists today. Now, scientists at the University of Chicago have...

Homework Statement Hello, I am attempting to use the velocity Verlet algorithm of integration applied to the solar system in c++. My goal is be able to use the outputted position components in a plot to see if the trajectory of my object is elliptical/parabolic/hyperbolic resulting from the...

Hi! I'm doing a research project titled "Is it possible to colonise Mars?" I'm currently researching how to raise the temperature and pressure - and I've discovered to do this that re-directing asteroids towards Mars containing Ammonia would be vital. However, where do these asteroids that...

Hello. I am reading a paper which says that only Earth (between the rocky planets) keep a strong magnetic field and it arose an question on this: Why does the magnetic field of the planets decrease with time in such planets? Why the magnetic field of the Earth is the only one which keeps strong?

I read in some books that as the sun approaches the end of the fusion process(the complete one) , it will expand and engulf some of the inner planets. But why will it expand?

Hello! I read in some books that the behavior of the Solar system can't be predicted indefinitely (up to several hundreds of million of years). Is this a numerical limitation, in trying to simulate it or is it some physics responsible for it? (I guess that this assumes that no other bodies...

Greg Bernhardt submitted a new PF Insights post Getting Started with Solar System Imaging Continue reading the Original PF Insights Post.

Hello, My question is, how much dark matter (any of mass, volume, density, etc) would we have to have in our solar system for us to detect it? My guess is that we would detect the dark matter through gravitational lensing or the perturbation of planetary orbits. On previous posts about dark...

I've been working on a crude N-body simulator which allows N bodies of equal masses to interact gravitationally in 2 dimensions. My goal is to model the formation of Solar System. Each body is modeled as a circle with a radius as a function of its mass, in such a way that all bodies have the...

I understand that the concept of a atom resembling a solar system is disregarded as being untrue because this is based on the Bohr model which doesn't represent how an electron would actually appear in its probability cloud. However, would it be possible that if there were an observer on the...

My question is, take Mars, say, and install a huge rocket engine on the ground pointing out the planet (obviously) and in the opposite direction of its velocity, so that if it is turned on, the planet is slowed. The rocket starts to work and Mars is slowed. If the loss of velocity goes little by...

I have been working on implementing a solar system system simulator in C++ - but am getting incorrect results on the order of 10^10 km, and it seems that the planets are moving directly away from the sun. I suspect that there is a mistake in the integrator (Velocity Verlet) that I have posted...

I am working on a simulation of the solar system, but I am having problems with the orbits with Europa and Io shown in the image below, the orbits of Jupiter, Ganymede and Callisto are consistent with NASA's simulations. For all bodies I have used identical parameters in generating the initial...

Hi, as a side project I am making a solar system simulator in Python, but I am getting extreme inaccuracies. As the image shows - I am comparing the simulation to data obtained from NASA's Horizon. I have written a a basic Verlet integrator in the Python class posten below: import numpy as...

Is there any evidence of the enlargement of planetary orbits over time? Are the planets moving further from the sun?

Hello, I am new to this forum, so be brutal :) So, I've tried to find information about Earth's origin. The nebula, cluster we are a part of etc. but i could not find the answer I was looking for. For me, it seems logical that we are a part of a cluster. How often do we find a star whos just...

Isn't this the best map of the solar system you've seen? http://joshworth.com/dev/pixelspace/pixelspace_solarsystem.html It is so hard to imagine those distances.

Hi, I'm developing a very simple solar system simulator for educational purpose. I had taken from wikipedia mass, velocity of planet and applied universal gravitation formula and applied to all celestial corps. It works well, but when I add the moon... the moon is like a planet, rotating around...

In this alternate universe, Earth is the same as back home--8,000 miles wide, 25,000 around, six sextillion tons, orbiting a G-type main-sequence star from a distance of 93 million miles. But here, the similarities end. MOON DIAMETER--3,273 miles MASS--0.025x that of Earth DISTANCE FROM...

I am trying to plot the trajectory of an asteroid in MATLAB using ode23. The only bodies in the system are The Sun, Earth, Mars and Jupiter and their orbital data has been loaded from data files. I have picked arbitrary initial conditions for the asteroid and believe my forces are correct. My...

A Milankovitch cycle is defined in Universe Today as "a cyclical movement related to the Earth’s orbit around the Sun." There are three elements to a Milankovitch cycle that affects the amount of solar heat and with it, the Earth's climate: Eccentricity (Orbital Shape)--The elliptical shape...

So I'm reading in the news and a group of scientists from the New Horizons missions appear to be reopening "The Pluto Debate" with yet another new definition of planet at the Lunar and Planetary Science Conference in March:rolleyes:. If accepted their definition of planet would increase the...

Hey guys, Is it possible to travel with high speed beyond a solar system or a galaxy? Or is there something that will prevent something to move at high speed outside a solar system or a galaxy?

Does anyone know of a website with an accurate ephemeris where you can plug in a time and get the state vectors (position and velocity) for the sun and all of the planets in a barycentric coordinate system?

Assume that you are commissioned to select three solar system bodies (planets or moons) to deposit a colony of bacteria or microbes of your choice outside (i.e. either on the surface or underground, but not in any man-made enclosure). No resources from Earth (such as food, water, organic...

I wonder if someone can tell me if I have interpreted the cited article correctly. https://arxiv.org/abs/1306.5534 The article seems to have calculated upper bounds on the density of DM for different parts of our solar system. We have found that ρdm is less than 1.1⋅10−20 g cm−3 at the orbital...

I am given the solution to the first part of the problem, however not the second part - would appreciate for someone to double check my work! Cheers. 1. Homework Statement If a scale model of the solar system is made using materials of the same respective average density as the sun and...

What is?

I know that the overall temperature of the universe is microwaves at 3 Kelvin or so from the Big Bang, but is this mostly for deep space? Or is this pretty much the temperature in our solar system also, assuming a coordinates some distance away from any of our planets but still within our solar...

Approaching Earth from 100 light years (by Earth's measurement) at the fastest theoretically (not practically) possible velocity where from your relative near-c frame the distance is foreshortened to 1 Planck length and a century elapses in Earth's time frame to 1 Planck time in yours, how would...

I was just wondering, what if an object is placed in our solar system, will it revolve around the sun? If yes, will it have a centripetal acceleration too?

ok I know that anybody in the heavens will bend spacetime with the gravity it has. What I was wondering was how do we measure around them like from the Earth to mars. When Mars in now quit on the opposite side of the sun ( so we can see it at sunset). do we measure the parabolic curve in...

Are all planets in our Solar System in the same plane ? :))

Hi guys, This is basically a quick question to hopefully find some pointers on a topic I've been browsing the internet on to not much success. Basically the topic I'm trying to find more information on is the angular momentum problem with the "nebular hypothesis" of the formation of our solar...

I've been tinkering with a few diagrams in an attempt to illustrate the motion of the solar system in its journey around the Milky Way. I also wanted portray how the celestial, ecliptic and galactic coordinate systems are related to each other in a single picture. Note: in the Celestial, or...

Why do the Great oppositions of Mars always happen at the same time of the year? What is that time?

How can inhabitants of the far side of moon guess that the moon is revolving around the earth?

"Nearly 1000 TNOs known to inhabit the outer Solar System have been discovered by OSSOS (or earlier CFEPS)." - OSSOS http://www.ossos-survey.org/tnodb.html "Started in February 2013, OSSOS is a four-year project using the MegaPrime camera, a 1x1 degree imager on the 3.6m Canada-France-Hawaii...

As the Sun's supply of hydrogen gradually gets exhausted gravity takes over and predominates over fusion energy. As this happens does the equilibrium of the solar system gets distorted, and if so is there a cut-off point for the same ? o0)

Hey guys! Working on a side project using machine learning and n-body simulations. I could just use the library Rebound (http://rebound.readthedocs.io/en/latest/) but I decided to first try building my own simulator before taking shortcuts. Simulation uses the masses of the bodies (from Sun...

Hey everyone, I'm new to the Physics Forum, so this is my first post. I heard somewhere that the Sun moves through space at a certain velocity. If that is true, then wouldn't the Solar System be a system of vortex motion, and not simply gravity being a centripetal force holding the planets...

i calculated the centripetal forces in our solar system but i can't seem to find a connection using the centripetal force formula: Fmpz=(m⋅v2)/r i found out that the mean centripetal force for the planets around the sun is about 10^39, the mean centripetal of the moons around Jupiter is about...

Looking for a Book on the LaGrangian Points solution in an Eigen System calculation for all the Planets.

What would be the propable trajectory and position of the ninth planet that has been suggested few days ago (20.1.2016 by Konstantin Batygin and Michael E. Brown) ? if i understood correctly, the exact position of the planet is unknown and has not been evaluated. But by looking this article...

Solar system: Double binary star(2 binary stars in a quadruple star system) Kepler A: A big blue star. It is bigger than all the other stars in the double binary system. It will however last longer than our sun just like the other 3 stars will. Kepler B: This is a green star(The green star...

I read somewhere that on the scale of the solar system, all forces except gravity are negligible. I can't think of any forces except gravity that would be acting on the planets... what are these other negligible forces?