The European Space Agency's Venus Express mission saw something it could not explain. It appeared that there were holes on the nightside of Venus' ionosphere. Researchers at NASA's Goddard Space Flight Center investigated these...

What does our planet look like from space? Most are familiar with the beloved images of the blue marble or pale blue dot -- Earth from 18,000 and 3.7 billion miles away, respectively. But closer to home, within the...

Students will learn about the different layers of the atmosphere. The changes in the atmosphere are explained using examples of contemporary environmental conditions brought about by human behavior. The oxygen cycle and the carbon cycle...

Atmosphere Set: 3. This clip explains the formation of the Earth's auroras.

This nugget explains the mechanism of movement of electric charges in a current-carrying conductor.

Robert Lin, the late director of the Space Sciences Laboratory, discusses how NASA's MAVEN spacecraft will study the interaction of the Martian atmosphere with the solar wind. MAVEN's findings will reveal how Mars lost its early...

Atmosphere Set: 1. This clip examines the chemical composition and the layers of the atmosphere.

Numbers stations are a mysterious phenomenon of shortwave radio dating back to the Cold War. The radio signals are secret messages sent by intelligence agencies to undercover spies all over the world, but no government has ever...

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights and starry sky, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

Time lapse of Northern Lights over Arctic Mountains. Lofoten Islands Norway

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

HD Time-lapse: Northern Light Aurora Borealis at VIK Southern Iceland, 1920x1080 Format

HD Time-lapse: Northern Light Aurora Borealis at Kirkjufell Iceland

HD Time-lapse: Northern Light Aurora Borealis at VIK Southern Iceland, 1920x1080 Format

HD Time-lapse: Northern Light Aurora Borealis at Kirkjufell Iceland, 1920x1080 Format

HD Time-lapse: Northern Light Aurora Borealis at VIK Southern Iceland

HD Time-lapse: Northern Light Aurora Borealis at VIK Southern Iceland

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights behind cloud, Karasjok, Norway, February 2008

Aurora borealis, Northern Lights, Karasjok, Norway, February 2008