Venus as a more Earth-like planet

Details Venus as a more Earth-like planet Venus as a more Earth-like planet

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007natur.450..629s&link_type=abstract

Nature, Volume 450, Issue 7170, pp. 629-632 (2007).

Computer Science

28

Scientific paper

Venus is Earth's near twin in mass and radius, and our nearest planetary neighbour, yet conditions there are very different in many respects. Its atmosphere, mostly composed of carbon dioxide, has a surface temperature and pressure far higher than those of Earth. Only traces of water are found, although it is likely that there was much more present in the past, possibly forming Earth-like oceans. Here we discuss how the first year of observations by Venus Express brings into focus the evolutionary paths by which the climates of two similar planets diverged from common beginnings to such extremes. These include a CO2-driven greenhouse effect, erosion of the atmosphere by solar particles and radiation, surface-atmosphere interactions, and atmospheric circulation regimes defined by differing planetary rotation rates.

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