Chrappa Gay Mars

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B Y C H R I S G A Y A N D R A L P H C H R A P P A

MARS


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DISCOVERY OF MARS

No single person can becredited with the discovery

Mars is one of the five planets

which can be seen from the sky Many ancient civilizations wrote

accounts about Mars

1877astronomer Asaph Hall

spotted the two moons (Phobosand Deimos)


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ORIGIN OF THE NAME

The Romans and the Greeks named theplanet after their God of War because of itsreddish color

Mars is the Roman God, and Ares is the GreekGod

The Roman name is accepted


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SIZE OF MARS

Diameter: 6,785 km (53% of Earths)

Mass: 0.64 x 1024 kg (11% of Earths)

Density: 3.9 g/cm3 (Earth is 5.5 g/cm3)


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EXTERNAL COMPOSITION

Reddish Color

Caused by rust (iron oxide) in soil

Features: volcanoes, canyons,

riverbeds, craters, dune fields


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INTERNAL COMPOSITION

Scientists are not definitely sure about itscomposition

Believed to be similar to Earths (less nickel)

Consists of mainly iron and sulfur

The core most likely consists of iron with a little nickel


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INTERNAL LAYERS

Crust

Most likely a thicker crust than Earth

Mantle

Liquid Core

Large and molten


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ATMOSPHERE

Much thinner than Earths

Surface Pressure: 1/100thof Earths (varies by season)

Composition:

95% Carbon Dioxide Nearly 3% Nitrogen

Nearly 2% Argon

0.13% Oxygen


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MAGNETIC FIELD

No significantmagnetic field dueto the core

probably beingsolid

Gravity is about 1/3of Earths


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ROTATION AND REVOLUTION

Rates:

Revolution: 687 days (Earth is 365.26)

Rotation: 24 hrs. 37 min. 23 sec. (Earth is 23 hr. 56 min. 4 sec.)


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EVIDENCE OF WATER

Small Amount of water

Frozen into the surface of the planet

Polar Ice Caps

Two Kinds of Ice (Water and Dry Ice)

No liquid water on surface


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SPACE MISSIONS

Mariner 41st successful mission to mars in 1965

Mariner 4, 6, 7, 9took pictures of Mars and its moons

USSR sent similar missions to Mars (1971-1973)

1970s Viking Missionssearch for life (organic) 2001Mars Odyssey was launched and collected

data on the chemicals and minerals that make upMars

2007Phoenix Mars Landeruse a robotic arm to digup soil samples

2012 - Mars Rovertakes pictures and samples using arobotic arm


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MARS ROVER (CURIOSITY)


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VIKING SPACE MISSION


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PHOENIX MARS LANDER


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EVIDENCE OF LIFE

No evidence of life

Life would be too harsh for humans

Temperatures vary from -113-0 degrees C

Life could exist inside pores and rocks where there isprotection from the extreme conditions

Have to live in a place where liquid water exists


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PLATE TECTONICS

Recent research, has shown Mars has two mobileyet sluggish plates

Olympus Mons (Dead Volcano)23 kmhighest

peak in the solar system Valles Marineris (giant canyon system)runs about

2500 miles across the surface and reaches a depthof 6 km (Grand Canyon is only 1.6 km)


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OLYMPUS MONS


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VALLES MARINERIS


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PHOBOS

Distance from Planet: 9,382 km

Diameter: 27.35 km

Many craters

Means panic and fear


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DEIMOS

Distance from Planet: 23,464 km

Diameter: 16.09 km

Appears to have little surface detail because it is coveredwith a thick layer of dust

Means terror and dread


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REFERENCES

"Discovery News." DNews. Web. 23 Feb. 2013.

"The Interior Of Mars." ThinkQuest. OracleFoundation, Web. 23 Feb. 2013.

"Nine Planets." The Solar System Tour.Web. 23 Feb.2013.

"Solar System Exploration: : Planets." Solar SystemExploration: : Planets. Web. 23 Feb. 2013.

"Welcome to the Planets." Welcome to the Planets.

Web. 23 Feb. 2013. "Windows to the Universe." Windows to the Universe.

Web. 23 Feb. 2013.

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