the structure of the earth was discovered in 1936.
when was the structure of the earth discovered?
1936
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planet corot-7b, with a mass estimated at 4.8 earth masses and an orbital period of only 0.853 days, was announced on 3 february 2009. the density estimate obtained for corot-7b points to a composition including rocky silicate minerals, similar to the four inner planets of the solar system, a new and significant discovery. corot-7b, discovered right after hd 7924 b, is the first super-earth discovered that orbits a main sequence star that is g class or larger.
super-earth