The Sun’s gravity holds this solar system together and, in fact, it’s the reason we even have a solar system. Its pull is so strong that it can even “grab” comets millions of miles away. So the Sun is the most massive thing in the neighborhood. Everything else makes up just 0.1 percent. The Sun has 99.9 percent of all the matter in the solar system. All objects pull other objects toward them, and the more mass (or matter) an object has, the stronger its pull. Why don’t all these planets, moons, and asteroids just stay where they are? The answer is gravity. Use the tool to create the sort of objects that you would produce on a lathe. Comets fall into planets, and asteroids smash into moons. The Spin tool extrudes (or duplicates it if the selection is manifold) the. Sometimes these spinning, circling, moving objects crash into one another. Earth orbits the Sun, and so do other planets, their moons, and asteroids. While these objects rotate, they revolve around, or orbit, each other. Other planets and moons spin, too, and even the Sun itself spins. You and everything else on Earth are traveling up to 1,000 miles per hour right now! That’s how fast the planet’s surface is spinning, or rotating, at the equator.
0 Comments
Leave a Reply. |