the solar system
TRANSCRIPT
21st Century Solar System
21st Century Solar System
Objects Percent of total mass _____________ __________________
Sun 99.8%
Jupiter 0.1%
Other planets 0.05%
Everything else 0.05%
• The sun is the biggest, brightest, and hottest object in the solar system.
• A middle-aged, average star.
• The sun is an ordinary star.
• The sun is made of about 70% hydrogen and 28% helium
• Mercury is solid and is covered with craters.
• Mercury has almost no atmosphere.
• Mercury is the eighth largest planet.
• Mercury is the second densest major body in the solar system, after Earth.
• Venus is the sixth largest planet. It’s about three-fourths the size of earth.
• The surface is rocky and very hot. The atmosphere completely hides the surface and traps the heat.
• Venus has no satellites
• Is the planet we live in.• Earth is the fifth largest
planet and the third from the sun.
• Liquid covers 71 percent of the Earth’s surface.
• The Earth has one moon.
• Mars is the fourth planet from the sun.
• Mars has a thin atmosphere that contains mostly carbon dioxide.
• Mars has two small moons.
Phobos
Deimos
• Jupiter is the largest planet and is the fifth closest to the sun.
• Jupiter does not have a solid surface. The planet is a ball of liquid surrounded by gas.
• The Great Red Spot, a huge storm of swirling gas that has lasted for hundreds of years.
• Saturn is the second largest planet and the sixth from the sun.
• Saturn is made of materials that are lighter than water. If you could fit Saturn in a lake, it would float!
• Saturn’s rings are not solid; they are composed of small countless particles.
• Uranus is the third largest planet and the seventh from the sun.
• Uranus is one of the giant gas planets.
• Uranus is blue-green because of the methane in its atmosphere.
• Neptune is the fourth largest planet and the eight from the sun.
• Because of the orbits, from 1979 to 1999, Neptune was the ninth planet.
• Like Uranus, the methane gives Neptune its color.