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Our Solar System

Discover fascinating facts about our solar system's planets - from Mercury, the fastest planet, to Pluto, the icy dwarf planet. Learn about asteroids, meteoroids, and comets that wander through space. Engage with this comprehensive guide to our cosmic neighborhood.

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Our Solar System

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  1. Our Solar System

  2. Mercury,the Fastest Planet • closest planet from Sun • Small, rocky planet • Fastest planet – 50km/sec (88 days = 1 year) • Temperatures 467* C to -183* C • Very little atmosphere

  3. Venus, Earth’s Twin • Earth’s twin (~same size, mass, • composition, and distance from sun) • Thick atmosphere that traps heat • Hottest planet (450*C) (hot enough to melt lead) • Intense pressure • Winds faster that hurricane force winds • Day longer than year • Rotates backwards (sun rises in west, sets in east)

  4. Earth, the Planet with Life • Has life • 3rd planet from Sun • 5th largest planet • Tilted axis gives us seasons

  5. Mars, the Red Planet • Red planet • Small and rocky • Has volcanoes, impacts, tectonics, dust storms, polar ice caps • Great dust storms engulf entire planet creating giant dunes, wind streaks, wind carved features • Highest mountains and deepest canyons

  6. Jupiter, the Largest Planet • Biggest planet • Like a mini solar system with 63 moons and rings • Composition resembles a small star • Jupiter’s moon Io is the most volcanically active body in the solar system • Large red spot (a hurricane)

  7. Saturn, the Ringed Planet • A gas giant with rings • Mostly made of hydrogen and helium • Volume 755 times that of Earth’s • Winds reach 500m/s (Earth’s strongest hurricane winds are 110m/s) • Fast winds and heat from interior cause yellow and gold bands in atmosphere

  8. Uranus, the Sideways Planet • Has some of the brightest clouds • 11 rings • Blue-green color from methane gas • 7th planet, it takes 84 years to orbit Sun • No solid surface – a gas giant • Liquid core

  9. Neptune, the Windy Planet • 8th planet – orbits Sun in 165 years • Farthest planet from Sun for 20 year period out of every 248 Earth years. • Large dark spot (a storm) • Has rings like all the gas giants

  10. Pluto, the Icy Dwarf Planet • Small, cold dwarf planet (It is not a planet anymore. Scientist changed the classification of planets. Pluto did not change.) • Takes 248 years to orbit Sun • 2/3’s the diameter of Earth’s Moon • Rocky core surrounded by water ice • Pluto and its moon Charon share the same orbit

  11. Asteroids • Rocky fragments • Asteroid belt between Mars and Jupiter • Millions from ¼ size of the moon to less than a kilometer across • Mars’s moons may be captured asteroids

  12. Meteroids • Bits of material hurling through space • Meteors or “shooting stars” are these materials as they fall through Earth’s atmosphere. Air friction causes them to heat up and shine like stars. • Meteorites are when these bits of materials reach the earth’s surface.

  13. Comets • Dirty ice leftovers • The tails always point away from the Sun. The solar wind blows the particles that make up the tail away.

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