On the trail of dark energy: Physicists propose Higgs boson 'portal'

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One of the biggest mysteries in contemporary particle physics and cosmology is why dark energy, which is observed to dominate energy density of the universe, has a remarkably small (but not zero) value. Now, two physicists suggest that the Higgs boson could provide a possible "portal" to physics that could help explain some of the attributes of the enigmatic dark energy and help resolve the cosmological constant problem.

via Science Daily

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Astronaut Cards

Astronaut Cards

A blue and purple fractal image resembling an astronaut's helmet and shoulders on a starfield background.

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Keyhole Nebula and Digitus Impudicus Business Cards

Keyhole Nebula and Digitus Impudicus Business Cards

Galaxies, Stars and Nebulae series

Details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the 'Keyhole Nebula, ' obtained with the Hubble Space Telescope. The picture is a montage assembled from four different April 1999 telescope pointings with Hubble's Wide Field Planetary Camera 2, which used six different colour filters. The picture is dominated by a large, approximately circular feature, which is part of the Keyhole Nebula, named in the 19th century by Sir John Herschel. This region, about 8000 light-years from Earth, is located adjacent to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right. The Carina Nebula also contains several other stars that are among the hottest and most massive known, each about 10 times as hot, and 100 times as massive, as our Sun.

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Image code: kndigimp

Image credit: Hubble's Wide Field Planetary Camera 2

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