Astronomers refer to Venus as the sister planet of Earth. Both have similar size, mass, density and volume. Both formed roughly at the same time and were condemned from the same nebula. However, in recent years researchers have found that the resemblance ends here.
Venus is very different from Earth. It has no oceans and is surrounded by a heavy atmosphere composed mainly of carbon dioxide with almost no water vapor. Because of its density, the interior of Venus must be very similar to that of the earth.
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