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Aurora Australis Seen in New Zealand on Feb. 19, 2014
Aurora Australis Seen in New Zealand on Feb. 19, 2014

Aurora Australis as seen on Feb. 19, 2014 in New Zealand.

Michigan Aurora Seen on Feb. 19, 2014
Michigan Aurora Seen on Feb. 19, 2014

Michigan Aurora Seen on Feb. 19, 2014

Martian Dunes Flying in Formation
Martian Dunes Flying in Formation

In this image of a dune field on Mars in a large crater near Mawrth Vallis, some of the dunes…

Radioactive Core of a Dead Star
Radioactive Core of a Dead Star

NASA's Nuclear Spectroscope Telescope Array, or NuSTAR, has, for the first time, imaged the radioactive "guts" of a supernova remnant,…

Aurora Seen in North Dakota on Feb. 19, 2014
Aurora Seen in North Dakota on Feb. 19, 2014

A CME impact revved-up a minor geomagnetic storm already in progress causing aurora to spill into the northern tier states…

Yukon Aurora on Feb. 19, 2014
Yukon Aurora on Feb. 19, 2014

This aurora image was taken by Jonathan Tucker from the Yukon on February 19, 2014.

The Case of Missing Iron in Cassiopeia A
The Case of Missing Iron in Cassiopeia A

The mystery of Cassiopeia A (Cas A), a massive star that exploded in a supernova more than 11,000 years ago,…

The Wisps of Dione
The Wisps of Dione

Although the crack-like features seen here on Dione’s surface appear wispy and faded, they are in reality a series of…

Skiing Sochi
Skiing Sochi

This image—acquired by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on February 8, 2014—offers a view…

Adding a New “Color” to Palate of Cassiopeia A Images
Adding a New “Color” to Palate of Cassiopeia A Images

Elements making up the shredded remains of a massive star that exploded in a supernova are highlighted in this three-panel…