Much has been made about the "impending" end of the world in 2012. There are many ways life on Earth - or in some cases, the Earth itself - might be destroyed. Here are seven scientific theories as to how that might happen.
Most experts believe our sun will eventually supernova in 5 billion years or so, taking much of our part of the solar system with it. But there are other ways life on Earth — or in some cases, the Earth itself — might be destroyed. Here are seven ways that might happen.
Black hole: Gravity gone wild
Supervolcano: Not your traditional eruption
Cosmic alignment: Shadow of a dark rift
Solar storm: Time to get out the sunblock
Planetary smash-up: A high-speed collision in space
Supernova: When the sky explodes
Asteroid hit: What’s good for the dinosaurs…?
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