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** Welcome to Ms. Bethune's Fourth Grade ﻿Science Wiki! Get Ready To Explore.. **


 * The Sun is 330,000 times larger than the Earth.
 * Most of the mass of the Solar System is the Sun.
 * **Everything orbits in the same direction. **
 * The Sun is just one star in 200 billion in the Milky Way.
 * **Venus**, not Earth, is the **best-mapped planet** in the solar system, with 98% of its surface mapped.
 * The space between Mars and Jupiter is filled with a population of irregularly shaped chunks of rock and metal called asteroids. Scientists believe the asteroids are pieces of a planet that never formed.
 * Earth's moon is large enough to cover the sun completely from Earth's point of view.
 * Pluto is no longer considered a planet.
 * One of Saturn's moons called **Hyperion** is shaped sort of like a **hamburger patty** and rotates chaotically because of the gravitational influence of nearby Titan, another of Saturn's many moons.

Fun Websites
 * Go here to play fun games and learn more about the Solar System.
 * Go here to watch an interesting video on the Solar System.