Solar SystemThe largest astroids are 300km or 200 miles long in diameter but most asteroids are smaller. Over 20,000 asteroids have not been discovered. All together, asteroids do not have as much mass as our moon. Comets are small chunks of ice and frozen gasses mixed with dust and other particles of matter. Click on the link below, to begin your journey into OUTRER SPACE!http://www.lpi.usra.edu/education/timeline/introduction.shtml Milky Way Galaxy Notes SUN MERCURY VENUS MARS AB* JUPITER SATURN URANUS NEPTUNE *asteriod belt and PLUTO, is not scientifically a planet the SUN: Although many people may not know it, but the Sun has existed for over 4.5 BILLION YEARS! The Sun is our way of getting heat and as we all know (I hope so atleast) it's what keeps us alive.Check out this video about the Sun! http://www.youtube.com/watch?v=maxobPNVCLQ Terrestrial-Inner Planets: Mercury: Mercury is cratered airless. The temperature can range from 750 degrees F to -300 degrees F. Venus: Venus, unlike all the other planets, has NO moon. It is the lightest planet and is surrounded by acid rock clouds. Check out this video about Venus! http://www.youtube.com/watch?v=MASaBVBd3VU&feature=relmfu EARTH!: Earth is the only planet in the Milky Way Galaxy that can support life. Unlike the outter jovian planets, Earth is a terrestrial planet and it has liveable conditions. To be exact, Earth is 93 million miles away from the sun. Check out this video about Earth! http://www.youtube.com/watch?v=YMY_-xYmJvE&feature=related Mars: Mars is a terrestrial-inner planet. It is very close to the asteroid belt and it is the asteroid belt seperates the inner from the outter planets. Check out this video about Mars! http://www.youtube.com/watch?v=AGqqkhd1MeY&feature=related Jovian-Outter Planets: Jupiter: While weighing over 1,899 M⊕, Jupiter is the biggest planet that scientists know about. It has a massive red hole, that like black holes, destroys and sucks up. This red spot is called Jupiter's Great Red Spot. Like Saturn, Jupiter DOES have rings. Check out this video about Jupiter! http://www.youtube.com/watch?v=s56pxa9lpvo&feature=related Saturn: While taking the award for the planet with the most moons, Saturn is also fully loaded with rings! There are billions of ring particles in the entire ring system. The ring particle sizes range from tiny, dust-sized icy grains to a few particles as large as mountains.Check out this video about Saturn! http://www.youtube.com/watch?v=cL2QrfxrgBI&feature=related Uranus: While all the other planets are in the same direction, Uranus just so happens to be the only planet that is tilted sideways.While Uranus may seem like a planet full of extra-terrestrials, this is a planet full and covered with gas. Check out this video about Uranus! http://www.youtube.com/watch?v=G7f1nuwRq_E Neptune: While Neptune is the farthest planet from the sun, this planet has a lot of fun on its own. Neptune is the stormiest planet. The winds there can blow up to 1,240 miles per hour, that is three times as fast as Earth's Hurricanes. And we think the hurricanes here are bad! Check out this vidoe about Neptune! http://www.youtube.com/watch?v=76xz74X4ivw |