![]() The Sun’s gravity holds this solar system together and, in fact, it’s the reason we even have a solar system. In this episode of Crash Course Kids, Sabrina Cruz explains Earth’s Rotation & Revolution, specifically how the Earth rotates on its axis, creating day and night. So the Sun is the most massive thing in the neighborhood, with a pull so strong that it can even “grab” comets millions of miles away. Everything else makes up just 0.1 percent. Planet The eight planets of the Solar System with size to scale (up to down, left to right): Saturn, Jupiter, Uranus, Neptune (outer planets), Earth, Venus, Mars, and Mercury (inner planets) A planet is a large, rounded astronomical body that is neither a star nor its remnant. The Sun contains 99.9 percent of all the matter in the solar system. The Earth’s axis is tilted at an angle of 23.5 degrees. All objects attract other objects toward them, and the objects that have more mass (or matter) have more power to hold onto things and pull them in. Earth is slightly tilted (slanted) on its axis as it rotates on its axis and orbits around the Sun. Why don’t all these planets, moons, and asteroids just stay where they are? The answer is gravity. Comets collapse into planets, and asteroids go careening into moons. Around one year or exactly 365. The Earth rotates anticlockwise, that is, from west to east. ![]() Sometimes these rotating, orbiting, moving objects collide with each other in space. A revolution is a fixed-path rotation of the Earth around the Sun. The Moon orbits the Earth, and the Earth revolves around the Sun-as do other planets, their moons, and asteroids. While these objects spin, they revolve around, or orbit, each other. ![]() ![]() Spin is called rotate, the rotation of earth leads to the change between day and night. Other planets and moons rotate, too, and even the Sun itself rotates. For example, we say the earth revolves around the sun. You and everything else on Earth are traveling up to 1,000 miles per hour right now! That’s how fast our planet’s surface is rotating, or spinning, at the equator. ![]()
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