Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours...

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Mars Yuk Yung 3-14-05
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Transcript of Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours...

Page 1: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

MarsYuk Yung3-14-05

Page 2: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 3: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 4: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 5: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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Earth: • 13,000 km diameter• 150 million km from sun• 365 days in year• 24 hours in day• -88 deg C to +58 deg C temp range• 1000 mb surface pressure• 78% nitrogen, 21% oxygen

Mars: • 7,000 km diameter• 1.5 AU from sun• 687 Earth-day year• 24 hour, 37 minute sol (Mars day)• -127 deg C to 17 deg C temp range• 7 mb surface pressure• 95% carbon dioxide atmosphere

Page 7: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 8: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 9: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 10: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 11: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 12: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 13: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 14: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 15: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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Page 17: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 18: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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Number Density (cm-3)

Alt

itud

e (K

m)

Page 20: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Candor Chasma,Valles Marineris MGS PhotographQaidam Basin, China SRTM Shaded Relief

Page 21: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Mars MGS photograph; 43.2°N Lat, 90.6°W Long, in Tempe Terra

Afar Triangle, Ethiopia SRTM Shaded Relief

Page 22: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Martian Crater on Elysium Planitia MGS Photograph

Bosumtwi Crater, Ghana, Africa SRTM shaded relief

Page 23: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Gusev Crater, MarsCerro Armazones, Chile

Page 24: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Meridiani PlanumSan Gabriel Mountains

Page 25: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 26: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 27: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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Page 29: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

MSG MOC Image of “delta”system within Holden Crater on Mars (Malin et al, Science 2003)

Lena Delta in Siberia (NASA Scientific Data Purchase/Landsat 7)

Page 30: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 31: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 32: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
Page 33: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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A Brief History of ALH84001• 4.5 Gy ago: Igneous rock (orthopyroxenite)

which accumulated in a magma chamber on Mars. Oldest known rock from ANY planet!

• From 4.5 – 4.0 Gy: Suffered several shocks, probably from asteroid or comet impacts, formed mm-thick, cataclastic “granular bands” at high temperature.

• ~4.0 Gy ago: Major shock event brecciated it, rotated fragments, but did not heat it.

Page 37: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

A Brief History of ALH84001, cont’d

• ~4.0 Gy ago: Carbonate blebs formed in cracks by low-T precipitation events. (Aqueous, followed by at least 1 shock.)

• 15 Myr ago: Blasted off of Mars into space by another impact

• ~11,000 years ago: After wandering through space, landed on Antarctic Ice sheet.

• ~500 years ago, exposed at surface in Allan Hills.

Page 38: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

Was this Martian ever alive??!!

Page 39: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.

So what do the magnetite crystals in ALH84001 actually look like?

(Thomas-Keprta K.L., Bazylinski D.A., Kirschvink J.L., Clemett S.J., McKay D.S., Wentworth S.J., Vali H., Gibson E.K., Jr., and Romanek, C.S. Elongated Prismatic Magnetite Crystals in ALH84001

Carbonate Globules: Potential Martian Magnetofossils. Geochimica Cosmochimica Acta 64 (23), 4049-4081, 2000)

Page 40: Mars Yuk Yung 3-14-05. Earth: 13,000 km diameter 150 million km from sun 365 days in year 24 hours in day -88 deg C to +58 deg C temp range 1000.
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N2++e→ N+N

O2++e→ O+O

E(0) = 2.5 ev or 7km/s

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Acknowledgements

• NASA

• NSF

• JPL

• Diane Michelangeli

• Chris Parkinson

• Yung’s Caltech Research group