[You can use Turbowarp at higher FPS for greater accuracy] This is a model of the solar system in 3D, showing the real positions of the planets at a given time. You can... >> Zoom in and out using the +/- buttons on the screen >> Use your mouse to rotate it around in 3D space (you can also use your finger on mobile). >> Click on different bodies in the Solar System to follow different objects. For example, if you click on Earth, information about it will be shown on the left of the screen, and it will look like all other objects revolve around it. >> Change the speed of the simulation* using the scrollbar on the bottom of the screen. You can also change the speed to be negative to go back in time. A few notes about accuracy: -- the real size of planets and the Sun is not depicted -- Only the Sun, the 8 planets, and Pluto are shown -- Particularly at high speeds of simulation, the orbits of the inner planets no longer become accurate. The way it work is at every tick, the object will move a straight line with a distance = velocity * rate. Multiple small straight lines will approximate an ellipse, but with longer lines this approximation becomes worse. -- The errors accumulate over time. When I ran the simulation on TurboWarp to ~500,000 years, it suggested that all of Mercury, Venus and Earth collided into the Sun or possibly kicked out. -- I did not include all the tiny effects of relativity (I know it has a noticeable effect on the orbit of Mercury), rotation of planets around their axis, effects of tidal bulges, etc. *Don't go beyond about 8 months/s
This simulation uses data on the positions and velocities of solar system objects at the 1st of June 2025, 12:00 am, and models how it evolves using Newton's law of universal gravitation (F = Gm1m2/r^2). This 1/1/2025 00:00 data is from ssd.jpl.nasa.gov/horizons/app.html#/ 3D rotation calculations obtained from wikipedia.org/wiki/Rotation_matrix#General_3D_rotations. Rotation around the z-axis was omitted here though. 3D perspective projection code from the Scratch Wiki
