Is Pluto made of a billion comets? | | By comparing data from the 1st-ever Pluto flyby and a 1st-ever comet rendezvous mission, scientists have developed what they call ‘the giant comet’ model of Pluto formation. | | |
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Astronauts’ views of Mount Shasta | | Astronauts aboard the International Space Station captured these images of Mount Shasta while orbiting over northern California at different times of the year. | | |
Scientists track major freshwater change | | 'What we are witnessing is major hydrologic change,' they said. Over 14 years, Earth's wet land areas got wetter. Dry areas got drier. They also reported multiple hot spots resulting from groundwater depletion. | | |