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http://www.windows.ucar.edu/sun/Solar_interior/Nuclear_Reactions/Fusion/dt_fusion.gif. http://www.sciencemuseum.org.uk/exhibitions/energy/site/EIZCaseStudy18Item2.asp. http://astronomy.nju.edu.cn/astron/AT3/AT31709.HTM.
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http://www.windows.ucar.edu/sun/Solar_interior/Nuclear_Reactions/Fusion/dt_fusion.gifhttp://www.windows.ucar.edu/sun/Solar_interior/Nuclear_Reactions/Fusion/dt_fusion.gif http://www.sciencemuseum.org.uk/exhibitions/energy/site/EIZCaseStudy18Item2.asp
The Faint Young Sun Paradox. Solid line is solar luminosity relative to present (S/S0). Ts is Earth’s surface temperature and Te is Earth’s effective radiating temperature. Thick vertical bars are glaciations. SOURCE: Modified from Kasting and Catling (2003). http://www.nap.edu/books/0309095069/html/64.html
http://www.resa.net/nasa/images/mars/stromatolites.jpg http://www.scotese.com/images/precamb_events.jpg
The Faint Young Sun Paradox. Solid line is solar luminosity relative to present (S/S0). Ts is Earth’s surface temperature and Te is Earth’s effective radiating temperature. Thick vertical bars are glaciations. SOURCE: Modified from Kasting and Catling (2003). http://www.nap.edu/books/0309095069/html/64.html
http://www.huxley.ic.ac.uk/Local/EarthSciUG/ESFirstYr/EarthMaterials/mrpalmer/EarthMaterials/earth/earth1/f4.gifhttp://www.huxley.ic.ac.uk/Local/EarthSciUG/ESFirstYr/EarthMaterials/mrpalmer/EarthMaterials/earth/earth1/f4.gif
The Faint Young Sun Paradox. Solid line is solar luminosity relative to present (S/S0). Ts is Earth’s surface temperature and Te is Earth’s effective radiating temperature. Thick vertical bars are glaciations. SOURCE: Modified from Kasting and Catling (2003).