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APOD: 2011 March 25 – Auroral Substorm over Yellowknife
APOD: 2011 March 25 – Auroral Substorm over Yellowknife

APOD Science APOD APOD: 2011 March 25 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss  …

Einstein’s Theory Fights Off Challengers
Einstein’s Theory Fights Off Challengers

Two new studies have put Einstein's General Theory of Relativity to the test like never before, using observations of galaxy…

APOD: 2011 March 24 – Boston Moonrise
APOD: 2011 March 24 – Boston Moonrise

APOD Science APOD APOD: 2011 March 24… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss   APOD…

Celebrating Mercury Orbit
Celebrating Mercury Orbit

NASA Administrator Charles Bolden, left, shakes hands with Eric Finnegan, MESSENGER Mission Systems Engineer, right, as John Hopkins University Applied…

Astronaut Garan With Soyuz Booster
Astronaut Garan With Soyuz Booster

At the Baikonur Cosmodrome in Kazakhstan, NASA astronaut Ron Garan, Expedition 27 flight engineer, stands in front of the Soyuz…

Light Show on Saturn
Light Show on Saturn

A grand ringed planet, Saturn is one of the most intriguing bodies orbiting our sun. This image taken by the…

APOD: 2011 March 23 – MWC 922: The Red Square Nebula
APOD: 2011 March 23 – MWC 922: The Red Square Nebula

APOD Science APOD APOD: 2011 March 23 – MWC… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

An Historic Day in Human Spaceflight
An Historic Day in Human Spaceflight

On April 12, 1961, the era of human spaceflight began when the Cosmonaut Yuri Gagarin became the first human to…

Jupiter-bound Spacecraft
Jupiter-bound Spacecraft

NASA's Jupiter-bound spacecraft, Juno, is undergoing testing at Lockheed Martin Space Systems, Denver, prior to shipment to NASA's Kennedy Space…

Disappearing Act
Disappearing Act

This swirling landscape of stars is known as the North America Nebula. In visible light, the region resembles North America,…