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Abandon Earth! |
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Abandon Earth! |
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What if we had to abandon Earth? Where would we go? Here are the most obvious options.
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Mercury |
Day: 176 Earth days Year: 88 Earth days Gravity: .38 of Earth Av Temp: 333F (-300 to 780) Atmosphere: Almost none (He, Ar, Ne, Xe) Moons: 0 |
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Venus |
Day: 243 Earth days Year: 225 Earth days Gravity: .9 of Earth Av Temp: 867F Atmosphere: CO2 Moons: 0 Other Problems: Rain is Sulphuric acid |
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Moon |
Day: Year: Gravity: .16 of Earth Av Temp: -10F (-280 to 260) Atmosphere: None |
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Earth |
Day: 1 Earth days Year: 365 Earth days Gravity: 1 of Earth Av Temp: 59F (-40 to 120) Atmosphere: N, O Moons: 1 |
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Mars |
Day: 1 Earth days Year: 687 Earth days Gravity: .38 of Earth Av Temp: -4F (-135 to 27) Atmosphere: CO2, N Moons: 2 Other Problems: Atmosphere like car exhaust |
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Jupiter |
Day: .4 Earth days Year: 11.9 Earth years Gravity: 2.53 of Earth Av Temp: -85F Atmosphere: H, He, Methane Moons: 60 |
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Saturn |
Day: .4 Earth days Year: 29.5 Earth years Gravity: 1.07 of Earth Av Temp: -166F Atmosphere: H, He, Methane Moons: 31 Other Problems: Rain is liquified Methane |
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Uranus |
Day: .7 Earth days Year: 84 Earth years Gravity: .91 of Earth Av Temp: -220F Atmosphere: H, He, Methane Moons: 21 Other Problems: Blanketed in radioactive smog |
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Neptune |
Day: .7 Earth days Year: 165 Earth years Gravity: 1.14 of Earth Av Temp: -320F Atmosphere: H, He, Methane Moons: 11 Other Problems: 1 side won't see sun til 2030 |
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Pluto |
Day: 6 Earth days Year: 248 Earth years Gravity: .07 of Earth Av Temp: -375F Atmosphere: Methane, N Moons: 1 |
More planet pictures & info: http://pds.jpl.nasa.gov/planets/welcome.htm
In the picture distances are given from the sun to Earth and to Mars. These distances are in Au, short for "Astronomical Units", which is equal to the distance from the Earth to the Sun. 1 Au = 1.496 x 108 km or 149,600,000 km. 1 km = 1.6 mi.
1) What is the distance in miles from Earth to the Sun?
2) What is the distance in miles from Mars to the Sun?
3) What is the closest distance in miles from Earth to Mars?
4) What is the farthest distance in miles from Earth to Mars?
You have to travel 11.2 km/s to escape the gravity of Earth. The time it takes to get somewhere is given by the formula
t = d/v.
5) How long would it take to get to Mars (closest distance) at this 11.2 km/s?
