Mars: Earths little brothe r What are the

Mars: Earths little brothe r

What are the similarities and differences you notice? Marss axis is tilted at 25 deg. What are seasons on Mars like?

Marss axis tilt changes dramatically. What happens when the tilt is less/more? Artists depiction of an icy Mars

Do the Earth and Mars have similar interiors? Why? How do we even know whats inside a planet?

Atmospheres: Are they similar? Why? Constituents: Nitrogen: 78%

Carbon Doxide: 95.% Oxygen: 21 %

Nitrogen: 3% Argon: 0.9% Argon: 2%

Water: > 1% Oxygen: 0.1%

Carbon Doxide: 0.002% Water: > 0.03% Is there water on Mars? Why or why not?

Is there water on Mars? Why or why not? Marss south pole

Is there water on Mars? Why or why not? Partial Pressure of Water Phase Diagram of Water

Earth Mars Temperature

Mars or Earth? Mars or Earth?

Columbia Hills, Mars Atacama Desert, Columbia Hills, Mars

Mars or Earth? Mars or Earth?

Kilauea Volcanoe, Hawaii Olympus Mons, Mars Mars or Earth?

Mars or Earth? Dubai, UAE

Endurance Crater, Mars What is the evidence for past water on Mars? Mars or Earth?

Mars or Earth? Djado Plateau, Niger

Valles Marineris, Mars Mars or Earth?

Mars or Earth? Holden Crater NE,

Lena Delta, Mars or Earth?

Yemen Mars or Earth?

Mars Mars or Earth?

Mars or Earth? Niger Mars

Seven minutes of terror Curiosity descent http://www.youtube.com/watch?v=gZX5GRPnd4U Google Mars

Mars: Take-away messages Although smaller than Earth, Mars and Earth are similar in many ways. Mars and Earth have similar interiors, although Mars has

no liquid outer core, and so no magnetic field. Mars geology is/was formed by cratering, volcanism, tectonics and erosion by wind AND WATER! (Plate tectonics doesnt seem to have been important) Marss atmosphere is very different from Earths - lower

mass, and full of CO2. Marss small atmosphere and low temperature makes liquid water unstable at its surface (at least right now). Percival Lowells Mars

Lowells Map of Mar published in 1895 Vikings Mars 1976

Vikings Mars 1976

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