Photos

Photo Details

1 of 31

Antarctica

The aurora australis — the Southern Lights — as seen over the National Science Foundation’s Amundsen-Scott South Pole Station. The eerie visual effect arises when charged particles blown off by the sun (the solar wind) are caught in the Earth’s magnetic field and travel along the field lines, colliding with molecules of oxygen and nitrogen in the atmosphere. Image courtesy of the National Science Foundation, Jonathan Berry.