INAE Enterprises

From the Electron and Confocal Microscopy Laboratory, Agricultural Research Service, U. S. Department of Agriculture via 25 Microscopic Images of Snow Crystals «TwistedSifter.

Photos: Alaska Dispatch.

by Anne Ten Donkelaar at Broken Butterflies

HubbleSite – NewsCenter – Amateur and Professional Astronomers Team Up to Create a Cosmological Masterpiece 02/05/2013 – Release Images.  (Thanks io9.)

and sunset over the Cook Inlet.

Recommended:

Alexis Trice

Hearts of Space

Images belong to Linden Gledhill.  From his gorgeous collection of butterfly wing photographs on Flickr.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. Just set your coordinates and go.

Recommended:

Iain M. Banks.  Culture Series

Clione.ru Underwater Experiments

Folkstreams

xkcd