🔄FROM THE ARCHIVE Same size, orbits a similar star ...
A colorized radar map of the Maat Mons volcano on Venus, shows lava flows of unknown age, along with an apparent impact crater in the foreground. This image, created more than two decades ago by NASA's Magellan spacecraft, still represented the state of the art in our knowledge of Earth's near-twin. NASA scientists were conferring today about a nearby planet that is shockingly similar to Earth. It is just 5% smaller in radius and 15% smaller in mass.
No doubt you sense there is a catch, and indeed there is. The world I’m talking about is Venus. It is not orbiting another star; it is the planet closest to home right here in our own solar system. But I’m not just being coy. Despite its proximity, Venus is a profound enigma. It reallybe a hospitable world, but the truth is that it is more like hell on almost-Earth.
Some of these traits may be connected. Perhaps Venus’s lack of a moon has something to do with its slow rotation. Its slow rotation, in turn, might be related to its lack of magnetic field…which in turn might be related to its thick, dry atmosphere…which in turn might be related to its lack of dynamic geology. There might be a chain reaction at work.
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