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Probing the Impacts of Early Earth
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Probing the Impacts of Early Earth

by Justin CowartApril 13, 2014

Between 3 and 4 billion years ago, the planets of the inner Solar System were scarred by a number of large impacts. This period, known as the Late Heavy Bombardment, marks the final stage of planetary formation in the Solar System. But a new paper published in Geochemistry, Geophysics, Geosystems suggests that it was also the beginning of plate tectonics here on Earth.

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Large Comet to Buzz Mars, Impact Possible
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Large Comet to Buzz Mars, Impact Possible

by Justin CowartFebruary 28, 2013

Discovered on January 3, C/2013 A1 Siding Spring was typical of comet finds: a dim moving speck on a photograph. However, recent observations suggest that Comet Siding Spring could be extremely interesting indeed – its current orbit brings it only 37,000 km from Mars.

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NASA’s Dawn probe leaves Vesta, heads to Ceres
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NASA’s Dawn probe leaves Vesta, heads to Ceres

by AstroAggregatorSeptember 11, 2012

Nasa’s Dawn probe is a mission to explore the solar system’s two largest asteroids – Vesta and Ceres. Having spent around a year in orbit around Vesta, it has now left on course for Ceres, due to arrive in February 2015.

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