Scientists have announced that they have discovered magnetic crystals inside a 4 billion year old Martian meteorite that landed in Antarctica about 13,000 years ago. On earth, this type of crystal is only produced by microscopic bacteria.This is strong evidence for the existence of at least bacterial life on Mars.

This magnetic compound is called Magnetite and is used in audio and video tapes. It is created by a type of bacteriathat assembles the crystals atom by atom, producing crystals that are free from defects. This bacteria is commonly foundin water here on Earth.

“Finding this type of magnetic crystal in any material from another planet is an amazing and important finding,” saidDr. Dennis Bazylinski, a geobiologist at Iowa State University.
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