IC 2118: The Witch Head Nebula.  This suggestively shaped reflection nebula is associated with the bright star Rigel in the constellation Orion.

IC 2118: The Witch Head Nebula. This suggestively shaped reflection nebula is associated with the bright star Rigel in the constellation Orion.

RAPT Students in Harlem took turns delivering raps in class. Christopher Emdin, left, a professor at Columbia, joined them. By JOHN LELAND Published: November 16, 2012  They are an unlikely team of educational reformers.

RAPT Students in Harlem took turns delivering raps in class. Christopher Emdin, left, a professor at Columbia, joined them. By JOHN LELAND Published: November 16, 2012 They are an unlikely team of educational reformers.

What's in a Surname? : A view of the United States based on the distribution of common last names compiled by geographers at University College London.   http://worldnames.publicprofiler.org/

Surname Map of America

What's in a Surname? : A view of the United States based on the distribution of common last names compiled by geographers at University College London. http://worldnames.publicprofiler.org/

T2 bacteriophage virus (seen in orange) attacking an Escherichia coli bacterium. Each phage consists of a large, DNA-containing head and a tail composed of a tube-like central sheath with several fibres.

T2 bacteriophage virus (seen in orange) attacking an Escherichia coli bacterium. Each phage consists of a large, DNA-containing head and a tail composed of a tube-like central sheath with several fibres.

Mild geomagnetic activity is already underway following a lesser CME impact on March 7th. Shortly after the cloud arrived, a burst of Northern Lights appeared over the US-Canadian border. Shawn Malone photographed the display from the shores of Lake Superior:

Mild geomagnetic activity is already underway following a lesser CME impact on March 7th. Shortly after the cloud arrived, a burst of Northern Lights appeared over the US-Canadian border. Shawn Malone photographed the display from the shores of Lake Superior:

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