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  • Shows Index
    • Amateur Astronomy (5)
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    • Astronomy (104)
      • Cosmology (16)
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        • Extrasolar Planets (5)
        • Our Solar System (23)
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        • Compact Objects (3)
        • Stellar Evolution (7)
    • Listeners (13)
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    Past Shows
    • Ep. 103: Electromagetism
    • Ep 102: Gravity
    • Ep. 101: Advanced Propulsion Systems
    • Ep. 100: Rockets
    • Ep. 99: The Milky Way
    • Ep. 98: Quasars
    • Ep. 97: Galaxies
    • Ep. 96: Humans to Mars, Part 3 - Terraforming Mars
    • Student Questions: Collinsville High School
    • Ep. 95: Humans to Mars, Part 2 - Colonists
    • Ep 94: Humans to Mars, Part 1 - Scientists
    • Ep. 93: Missions to Mars, Part 2
    • Ep. 92: Missions to Mars, Part 1
    • Ep. 91: The Search for Water on Mars
    • Ep. 90: The Scientific Method
    • Ep. 89: Adaptive Optics
    • Ep. 88: The Hubble Space Telescope
    • Ep. 87: The End of the Universe Part 2: The End of Everything
    • Ep. 86: The End of the Universe Part 1: The End of the Solar System
    • Ep. 85: Detectors
    • Ep. 84: Getting Around the Solar System
    • Ep. 83: Wave Particle Duality
    • Ep. 82: Space Junk
    • Ep. 81: Questions on the Shape, Size and Centre of the Universe
    • Ep. 80: Craters
    • Ep. 79: How Big is the Universe?
    • Ep. 78: What is the Shape of the Universe?
    • Ep. 77: Where is the Centre of the Universe?
    • Ep. 76: Lagrange Points
    • Student Questions: Curtis High School
    • Ep. 75: Stellar Populations
    • Ep. 74: Antimatter
    • Ep. 73: Questions Show #8
    • Ep. 72: Cosmic Rays
    • Ep. 71: Gravitational Waves
    • Ep. 70: How To Win a Nobel Prize
    • Astronomy Cast Meetup at AAS Austin
    • Student Questions: Farmersburg
    • Ep. 69: The Large Hadron Collider and the Search for the Higgs-Boson
    • Ep. 68: Globular Clusters
    • Ep. 67: Building a Career in Astronomy
    • Ep. 66: How Amateurs Can Contribute to Astronomy
    • Ep. 65: The End of Our Tour Through the Solar System
    • Ep. 64: Pluto and the Icy Outer Solar System
    • Ep. 63: Neptune
    • Ep. 62: Uranus
    • Ep. 61: Saturn's Moons
    • Ep. 60: Questions Show #7
    • Ep. 59: Saturn
    • Ep. 58: Inflation
    • Ep. 57: Jupiter's Moons
    • Ep. 56: Jupiter
    • Ep. 55: The Asteroid Belt
    • Ep. 54: Questions Show #6
    • Ep. 53: Astronomy in Science Fiction
    • Special Episode: Panspermia
    • Ep. 52: Mars
    • Ep. 51: Earth
    • Ep. 50: Venus
    • Ep. 49: Mercury
    • Ep. 48: Tidal Forces Across the Universe
    • Ep. 47: Tidal Forces
    • Ep. 46: Stellar Nurseries
    • Ep. 45: The Important Numbers in the Universe
    • Listener Survey
    • Ep. 44: Einstein's Theory of General Relativity
    • Ep. 43: Questions Show #5
    • Ep. 42: Magnetism Everywhere
    • Ep. 41: The Rise of the Supertelescopes
    • Ep. 40: American Astronomical Society Meeting, May 2007
    • Ep. 39: Astrology and UFOs
    • Ep. 38: Neutron Stars and their Exotic Cousins
    • Ep. 37: Gravitational Lensing
    • Ep. 36: Gamma-Ray Bursts
    • Ep. 35: Questions Show #4
    • Ep. 34: Discovering Another Earth
    • Ep. 33: Choosing and Using a Telescope
    • Ep. 32: The Search for Neutrinos
    • Ep. 31: String Theory, Time Travel, White Holes, Warp Speed, Multiple Dimensions, and Before the Big Bang
    • Ep. 30: The Sun, Spots and All
    • Ep. 29: Asteroids Make Bad Neighbors
    • Ep. 28: What is the universe expanding into?
    • Ep. 27: Questions Show #3
    • Ep. 26: The Largest Structures in the Universe
    • Ep. 25: The Story of Galaxy Evolution
    • Ep. 24: The Fermi Paradox: Where Are All the Aliens?
    • Ep. 23: Counting Aliens With the Drake Equation
    • Ep. 22: Variable Stars
    • Ep. 21: Questions Show #2
    • Ep. 20: What We Learned from the American Astronomical Society
    • Ep. 19: Comets, Our Icy Friends from the Outer Solar System
    • Special Alert: Go See Comet McNaught
    • Ep. 18: Black Holes Big and Small
    • Ep. 17: Where does the Moon Come From?
    • Ep. 16: Across the Electromagnetic Spectrum
    • Ep. 15: Questions Show #1
    • Ep. 14: We're all Made of Supernovae
    • Ep. 13: Where Do Stars Go When They Die?
    • Ep. 12: Where Do Baby Stars Come From?
    • Ep. 11: A Universe of Dark Energy
    • iPod Issues Fix
    • Ep. 10: Measuring Distance in the Universe
    • Ep. 9: Einstein's Theory of Special Relativity
    • Ep. 8: Meteor Showers. Yes, the sky is falling.
    • Ep. 7: Getting Started in Amateur Astronomy
    • Ep. 6: More Evidence for the Big Bang
    • Ep. 5: The Big Bang and Cosmic Microwave Background
    • Ep. 4: The Search for Dark Matter
    • Ep. 3: Hot Jupiters and Pulsar Planets
    • Ep. 2: In Search of Other Worlds
    • Ep. 1: Pluto's Planetary Identity Crisis
    • Welcome to Astronomy Cast!


Ep. 91: The Search for Water on Mars

  • June 2nd, 2008
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A view underneath NASA's Mars Phoenix Lander. Image credit: NASA/JPL
A view underneath NASA's Mars Phoenix Lander. Image credit: NASA/JPL credit:

With the successful touchdown of the Phoenix Lander, NASA is continuing its quest to find evidence of past and present water on Mars. This week we discuss the geologic history of Mars, and explain why NASA thinks the story of water on Mars is so important. And how this ties into the search for life on the Red Planet.

Episode 91: The Search for Water on Mars


Show Notes

Welcome to Astronomy Cast, the most popular astronomy-related podcast. Just look at what listeners have to say about it:

Astronomy Cast is out of this world! It's hard to believe that it's free! This is an absolute must for any amateur astronomer or anyone interested in astronomy or cosmology. The hosts, Pamela and Fraser, are fun to listen to, extremely knowledgeable, and are able to explain difficult subject matter with great analogies. Bravo!
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To subscribe to the show in iTunes, click here.

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Episode 91: The Search for Water on Mars

  • NASA Mars Exploration page on Mars Geology
  • NASA page comparing Mars and Earth in size, volcanism, magnetic fields, and water reserves
  • NASA scientific and technical page comparing Mars and Earth
  • University of Arizona's "Mars 101" Phoenix mission page 
  • Monterey Institute page physical data of Mars
  • Volcanic activity on Mars
  • Olympus Mons
  • Universe Today article:  Rising Temperatures Could Shut Down Plate Techtonics
  • Evidence for erosion and outflow channels on Mars
  • Mars Epochs
  • Determining the age of surface features on Mars
  • Star Stryder post: "Comparative Planetology," about lava flows in New Mexico and comparing them to features on Mars
  • Technical paper:  THEMIS on Mars Odyssey spacecraft finds caves on Mars
  • Mars dust storms
  • Hematite on Mars
  • Mars polar ice caps
  • Universe Today article about microbes found in deep water 
  • Malin Space Science Systems article about life on Mars




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