A waddle of emperor penguins at Dumont d'Urville, Antarctica, April 10, 2012. Scientists used satellite mapping – with resolution high enough to distinguish ice shadows from penguin poo – to conduct what they say is an unprecedented penguin census from the heavens.
An Iranian woman poses with a portrait of Supreme Leader Ayatollah Ali Khamenei as Iranians stage a mass rally to mark the 35th anniversary of the 1979 Islamic revolution on Feb. 11, 2014, in Tehran.
(Scott Peterson/The Christian Science Monitor/Getty Images)
The bright light of a solar flare on the left side of the sun and an eruption of solar material shooting through the sun’s atmosphere, called a prominence eruption, appear in this NASA image taken June 20, 2013, at 11:15 p.m. EDT. A small NASA telescope was poised for launch to try to determine how the sun heats up its atmosphere to millions of degrees, sending off rivers of particles that define the boundaries of the solar system.