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Mars - The Red Planet

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Previous Mission to Mars Previous Mission to Mars Current Missions Odyssey Mars Rovers Mars Reconnaissance Orbiter Mars Reconnaissance Orbiter Future Mission ... – PowerPoint PPT presentation

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Title: Mars - The Red Planet


1
Mars - The Red Planet
Image Courtesy of NASA/JPL-Caltech
2
Mars the Red Planet
  • Known to Babylonians 3,600 years ago as Star
    that Wandered
  • The Greeks referred to it as Ares the god of
    War
  • Romans called it Mars

3
Location
Mars
Image Courtesy of NASA
4
Basic Facts
  • Distance from Sun 1.52 times as far as Earth
  • Time to Orbit the Sun 26 Earth months
  • Atmosphere Mostly carbon dioxide
  • Martian Day 24.7 hours
  • Temperature on the planets surface hardly rises
    above freezing point

5
Earth and Mars Comparison
Earth Mars
Radius 6378 km 3397 km
Density 5515 kg/m3 3933 kg/m3
Gravity 9.8 m/s2 3.72 m/s2
Year 365.25 days 686.98 days
Eccentricity 0.017 0.094
Day 24 hours 24 hr 39 min
Obliquity 23.45º 25.19º
6
Earth and Mars Comparison
Image Courtesy of NASA/JPL-Caltech
7
Mars Surface Features
  • Surface Color Red
  • Features
  • Impact Craters
  • Largest volcano in the solar system(Olympus
    Mons)
  • Largest Canyon in the Solar System(Valles
    Marineris)
  • Ancient river channels
  • Lava Rocks
  • Dust Reddish from volcanic rock

Valles Marineris
Image Courtesy of NASA/JPL-Caltech
8
Mars Atmosphere
  • Unbreathable
  • Thin
  • Dusty, makes the sky pinkish, lots of dust storms
  • Surface Pressure 1/150th of Earths (only 5.6
    millibars)
  • Composition 95 CO2, 3 N, 1.5 Ar, 0.1 O2,
    0.03 H2O

9
Moons of Mars
  • Mars has two tiny moons named Deimos (Panic)
    Phobos (Fear)
  • The moons are irregular and very small in size
  • Phobos 27x22x18 km
  • Deimos 15x12x10 km
  • The moons are probably asteroids captured by Mars

Deimos
Phobos
Image Courtesy of NASA
10
Is there Water on Mars?
  • Water is the key to life as we know it
  • The north and south poles of Mars are covered
    with thick ice or frost
  • Some astronomers about 100 years ago thought
    there were canals on Mars dug by intelligent
    civilization
  • Space probes to date have not found any traces of
    canals on Mars

11
Previous Mission to Mars
  • Viking 1 and 2 in 1976
  • First pictures of Martian surface

Image Courtesy of NASA/JPL-Caltech
12
Previous Mission to Mars
  • Pathfinder in 1997
  • Roving vehicle Sojourner to explore Martian
    surface

Image Courtesy of NASA/JPL-Caltech
13
Current Missions
  • Mars Global Surveyor
  • Accomplishes all the tasks of its mission
  • And still going

Image Courtesy of NASA/JPL-Caltech
14
Odyssey
  • Discovered subsurface water ice near poles
  • Track changes of polar ice, clouds and dust
    storms
  • Generated maps of radiation and minerals

Image Courtesy of NASA/JPL-Caltech
15
Mars Rovers
  • Spirit
  • Landed January 3, 2004
  • Opportunity
  • Landed January 24, 2004

Image Courtesy of NASA/JPL-Caltech
16
Mars Reconnaissance Orbiter
  • Launch date 2005
  • SHARAD
  • Shallow Radar Instrument
  • Penetrate ground and search for water at depths
    greater than 3 feet.
  • CRISM
  • Spectrometer
  • Find recent traces of water

Image Courtesy of NASA/JPL-Caltech
17
Mars Reconnaissance Orbiter
  • Launch date 2005
  • CTX
  • Contex Camera
  • Wide area views
  • HiRISE
  • High Resolution Camera
  • In depth study of areas where water once flowed

Image Courtesy of NASA/JPL-Caltech
18
Future Mission
Phoenix - 2008
Mars Science Laboratory - 2009
K9 Rover
Image Courtesy of NASA/JPL-Caltech
19
Mars Websites
  • http//mars.jpl.nasa.gov/classroom
  • http//mars.jpl.nasa.gov
  • http//marsed.asu.edu
  • http//msip.asu.edu
  • http//marsbound.asu.edu
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