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Mars Basics

Mars Basics. Size & Distance. Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit inside the Earth! 1.5 AU from the sun (~140 million miles) 0.5 AU from the Earth (~43 million miles) SCALE!!!. Size & Distance. Scale.

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Mars Basics

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  1. Mars Basics

  2. Size & Distance

  3. Smaller than Earth (0.532x) Mars diam ~ 6779 km (4212 miles) Earth diam ~ 12,742 km (7918 miles) 8 Mars would fit inside the Earth! 1.5 AU from the sun (~140 million miles) 0.5 AU from the Earth (~43 million miles) SCALE!!! Size & Distance

  4. Scale • Using an Earth balloon and Mars balloon to scale: • Q: How far away do you think Mars would be? • A: ~0.4 miles (0.64 km)

  5. Four Points by Sheraton Courtyard Marriott

  6. Rotation & Revolution • One Martian day (sol) is 24 hours and 37 minutes • One Martian year is 687 Earth days, almost two Earth years

  7. Like Earth, Mars tilts This tilt contributes to seasons; orbit also contributes Seasons

  8. Mars does have an atmosphere, though it is very thin Air pressure at the surface is about 1/100th the surface pressure on the Earth Earth: 1013mb Mars: 7mb Mostly carbon dioxide, some nitrogen 95% CO2 2.7% N2 1.6% Ar 0.13% O2 Atmosphere

  9. Average temperature is about -80° F Can drop to -195° F near the poles (winter); can reach 70° F near the equator Large day to night (diurnal) temperature variation You can Follow Mars Weather reports from the Curiosity rover here: Mars Weather on Twitter (@MarsWxReport) https://twitter.com/MarsWxReport Mars is Cold!

  10. Northern cap (left) is made of alternating layers of dust and water-ice Southern cap (right) is made of alternating layers of dust and water-ice below, carbon dioxide ice on top Polar Caps

  11. Giant Volcanos 400 miles!

  12. Valles Marineris

  13. An Impact Scarred Surface Argyre Basin 1150 miles!

  14. Ancient Floods Ravi Vallis 50 km

  15. Streamlined Features

  16. Valley Networks 25 km 5 km

  17. Phobos and Deimos 11 MI LES ~17 MILES

  18. A Desert World

  19. A Geologic Time Machine

  20. Mars Spirit Rover at Gusev Crater Mini-tornados - 20 to 60 mph wind 30 to 300 feet wide, up to 6 miles high A Dusty Place

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