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Star trails, one of which is Hamal, via H. Raab on Flickr.
These are star trails, and one of the brightest trails here is Alpha Arietis, or Hamal. To learn which one, click here, then click on the image you find. This neat image is by Herb Raab on Flickr. Click here to expand image.
Matt Daniel's WeatherGlobe
Amazing video and photos of tornado at Denver Airport on June 18
Blogus scientificus by Alex Reshanov
Dead guppies still make good dads
Earth Trekker by Deanna Conners
New deep sea community discovered off coast of Virginia
This Date in Science by Elizabeth Howell
This date in science: Paris Metro begins operations