Testing this theory will be difficult, though. New surveys of the red planet could look for fracture patterns in the crust that indicate the entire planet's surface once moved as one. The rocks' magnetic signature could also hint at ancient motion. The finding also has implications for other planets. "There may be a lot of other places in the solar system where this is important," Frances Nimmo of the University of California, Santa Cruz said. "Mercury, Venus, even some moons -- almost everywhere you look outside of Earth you have single-plate bodies." Related Links: |
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