News tagged with northern hemisphere

The colour-changing comet

Rosetta's comet has been seen changing colour and brightness in front of the ESA orbiter's eyes, as the Sun's heat strips away the older surface to reveal fresher material.

dateApr 08, 2016 in Space Exploration
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Last light—sunset at the South Pole

In the Northern Hemisphere, the spring equinox promises warmer days and green plants. But for researchers at NOAA's South Pole Atmospheric Baseline Observatory, Sunday March 20 marks the start of the austral autumn, the last ...

dateMar 30, 2016 in Earth Sciences
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