Based on what scientists have said about Venus, finding a world similar to it may not seem like a thrilling breakthrough in space research: Our neighboring planet's surface is a hot, toxic world, with sulfuric acid rain and volcanoes.

But Venus might once have been an ocean world much like Earth before it devolved into a hellhole. Now two teams of international scientists have found a Venus-like planet not far from our own solar system, and they're eager to know if it's habitable. 

The...

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