OUR SOLAR SYSTEM

MERCURY

• Mercury is 328.5E21 kg
• Atmosphere- trace amounts of oxygen, helium and hydrogen
• Core is molten iron rock bedding like earth's
• The average temp. is 801 degrees f.
• One year is 88 Earth days
• Mercury has no moons

VENUS

• Venus is 4.867E24 kg
• The atmosphere is 96% carbon dioxide
• Made of iron core and rocky mantle & surface
• The temp. is usually 864 deg. f.
• One year is 225 days
• 65% of the surface is mosaic volcanoes
• Venus has no moons

MARS

• Mars is 639E21 kg
• The atmosphere is 95.3% carbon dioxide
• The surface and most of the core is made of basalt
• At the equator it is about 70 d. the poles is nearly -193
• One year is 678 days
• There is a volcano shield bigger than any feature on earth
• Mars has two moons

JUPITER

• Jupiter is 1.898E27 kg
• The atmosphere is mostly molecular hydrogen and helium
• The planet is made of hydrogen
• The outside of the planet is -143
• The core is 43,000 d. .
• One year is 12 earth years
• There are 63 moons and some have volcanoes

SATURN

• Saturn is 568.3E24 kg
• The atmosphere is 75% hydrogen and 25% helium
• Made of hydrogen and helium too
• Usually -128 degrees f.
• One year is 29 earth years
• There are 62 known moons

URANUS

• Uranus is 86.81E24 kg
• The atmosphere is primarily hydrogen, helium, methane, and ammonia
• -224 degrees c. is the avg. temp
• There are 27 known moons

NEPTUNE

• Neptune is 102.4E24 kg
• Hydrogen, ammonia and different ices
• The surface is -218 degrees c.
• There are 14 moons and most have volcanoes and geysers