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This is an image of Venus.
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NASA

The Cooling of Venus

The following may be the history of Venus.

  • Venus formed about 4 Billion Years ago.
  • at the conclusion of forming it continued to be bombarded with leftover material. Many planets still bear the remains of this activity by showing many craters on the surface. Activity on the surface can act to change the craters.
  • Venus warmed from inside, and separated into layers. Because Venus is close to the sun, the atmosphere formed differently than did the Earth's, as sugggested by the Goldilocks idea.
  • After that, Venus started cooling down. The crust began to thicken, just like jello hardens when it is being made. The hardening crust prevented continental drift. This also prevented the recycling of the atmosphere.
  • Despite the thick crust, surface activity, including volcanism, may continue to this day as Venus continues to cool.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA