Calypso

The hole in the ozone over the Northern Hemisphere, 2011. Photo: NASA

This year there was a hole in the ozone over the North Pole as well

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

After a week of delays, NASA launched two satellites designed to study the Earth's atmosphere

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

NASA will launch two weather satellites next month to study cloud development

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