Tuesday, December 4, 2007

Entry for December 04, 2007/ Astronomy Tuesday

Went back into the past for this one. It is from Christmas eve of 2006. Thought it was sufficiantly cool. Hope you do too.

For all of you who are snowed in, think of it as a Early White Christmas and I hope you don't ;have to go any where.

Enjoy.

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2006 December 24
See

Rumors of a Strange Universe
Credit:High-Z Supernova Search Team,HST,NASA

Explanation:Eight years agoresults werefirst presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. In the language of cosmologists, a largecosmological constant is directly implied by new distantsupernovae observations. Suggestions of acosmological constant (lambda) arenot new -- they have existed since the advent ofmodern relativistic cosmology. Such claims were not usually popular with astronomers, though, because lambda is so unlike known universe components, because lambda's value appeared limited by other observations, and because less-strange cosmologies without lambda had previously done well in explaining the data. What is noteworthy here is the seemingly direct and reliable method of the observations and the good reputations of thescientists conductingthe investigations. Over the past eight years, independent teams of astronomers have continued to accumulate data that appears to confirm the unsettling result. Theabove picture of a supernova that occurred in1994 on the outskirts of aspiral galaxy was taken by one of these collaborations.

Tomorrow's picture:bigger truss

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