News tagged with northern hemisphere

The two faces of Mars

A moon-sized celestial object that crashed into the south pole: ETH researchers use a simulation to demonstrate why Mars consists of two notably different hemispheres.

dateJan 28, 2015 in Space Exploration
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Why does Sirius twinkle?

At this time of year, after dark we in the northern hemisphere are able to see the mighty constellation of Orion rise high in the sky with a very bright companion in a nearby constellation: Sirius – The Dog Star.

dateJan 17, 2012 in Astronomy
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The paradox of polar ice sheet formation solved

The beginning of the last glacial period was characterized in the Northern hemisphere by major accumulation of snow at high latitudes and the formation of a huge polar ice sheet. For climatologists this was paradoxical, since ...

dateSep 01, 2013 in Earth Sciences
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Tackling an Ice Age mystery

In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth's surface as its orbit and orientation toward the sun changes. But astronomical variations ...

dateSep 05, 2013 in Earth Sciences
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