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Atom & Cosmos

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mercury image

RISE UP  A line of small scarps (arrows) on Mercury, seen in this image from the MESSENGER spacecraft, suggest that the planet has been tectonically active in the last 50 million years.

Pluto

An ocean of salty water might lurk beneath Pluto’s Sputnik Planum, the left side of the dwarf planet’s famous heart, seen in this image from the New Horizons spacecraft.

Andre Kuipers

SPACE BOUNCE  Aboard the International Space Station, astronaut Andre Kuipers measures his weight using the pogo-stick-like Body Mass Measurement Device, which uses spring oscillations to determine mass.

Atom & Cosmos

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