Leven op mars

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Talk about life on Mars, given at the OK 2010 astronomical youth camp.

Leven op Mars Emma Versteegh

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Leven op mars

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Editor's Notes

Marvin the Martian
Christiaan Huygens
Christiaan Huygens
William Herschel Ijskappen die kimpen en groeien Eind 18de eeuw
Giovanni Schiaparelli
Schiaparelli
Percival Lowell Mars 1895 Mars and its Canals 1906
Lowell kanalen
War of the Worlds H.G. Wells 1897
War of the Worlds
Mariner 4 1965
Droge planeet; Geen rivieren, oceanen, leven Kraters, geen platentektoniek, verwering; Geen magnetisch veld (bescherming tegen kosmische straling) Atmosfeer 0.6 kPs (Aarde 101.3 kPa) >> Geen vloeibaar water Nu zoeken naar bacteri en
Viking 1 & 2 Jaren ‘70 Experimenten
Viking Water! Riviervalleien, erosie, vertakte stromen
Viking
Viking Carl Sagan
Viking experimenten Gaschromatograaf - massaspectrometer Bodem op verschillende temperaturen; Organische moleculen
Atmosfeer vervangen door He; nutrienten en water toevoegen Meet O2, CO2, N2, H2, NH4
Nutrientenoplossing met 14C Atmosfeer meten voor 14C
“ Marsatmosfeer” met 14C Bodem meten Alle experimenten controles met gesteriliseerde grond (650 oC)
Viking
Viking 1
Viking
Beagle 2
Galactic Ghoul
Mars Exploration Rovers
Spirit
Phoenix, 2008 Zoeken naar goede omstandigheden voor leven in de bodem
Robotarm, 0.5 m diep Bodem bevat oxidator perchloraat PH en zoutgehalte goed voor leven
Phoenix verdampend ijs >> Aanwezigheid gebonden water en CO2
Phoenix
Meteorieten, 34 stuks, 3 hebben aanwijzingen voor leven 1984 gevonden op Antarctica, van Mars weggeslagen 17 miljoen jaar geleden, 11000 jaar op Aarde ALH84001
Magnetiet, vorm die op Aarde alleen door microorganismen voorkomt Fossiele nanobacterien (als die sowieso bestaan)
PAKs
Nakhla meteoriet, 1911, Egypte Pre-Aarde chemische reacties met water Nanobacteria, PAKs
India, 1865 165 miljoen jaar geleden van Mars Chemische reacties met water Biofilm
Na Vikings vooral zoektocht naar water Water op Mars geschiedenis
2006
Geisers op Mars
Viking Face
Mars Global Surveyor Face
Terraformed Mars
Spirit