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Will life on Mars go the way of the dinosaurs before we have a chance to discover it? Incoming Comet C213/A1, discovered on January 1st, is expected by some astronomers to pass within 28,000 miles of Marsin 2014. But cometary trajectories change, and an impact is not impossible, although NASA estimates that the object will pass Mars at a distance more like 80,000 miles.

Should it hit the planet, it will cause a spectacular explosion, releasing the equivalent energy of billion megatons of TNT. This is roughly the size of the blast that climaxed the extinction of the dinosaurs 65 million years ago.
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We told you it was coming and here it is: NASA’s Mars Curiosity rover has used its full array of instruments to analyze Martian soil for the first time, and found a complex chemistry there, including water, sulfur and chlorine-containing substances, some of which could indicate there may be primitive life there (NOTE: Subscribers can still listen to this show). The composition is about half common volcanic minerals and half non-crystalline materials such as glass.
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NASA has announced that one of the instruments on the Curiosity Rover has sent back some extraordinary data, but the transmission is still being checked to make certain that it is not a fluke, and so far the space agency has not made an official statement about what the instrument has detected.read more