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category archive listing Category Archives: Cosmology

Chemical Clues Point to Dusty Origin for Earth-like Planets

12 August 2008 – 14:06

Higher than expected levels of sodium found in a 4.6 billion-year-old meteorite suggest that the dust clouds from which the building blocks of the Earth and neighboring planets formed were much denser than previously supposed. The study, by scientists from the Carnegie Institution, American Museum of Natural History, and U.S. Geological Survey, is published in [...]

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Examination of radiation left from birth of universe could alter theories

9 May 2007 – 18:54

Using relic radiation from the birth of the universe, astrophysicists at the University of Illinois have proposed a new way of measuring the fine-structure constant in the past, and comparing it with today.
By focusing on the absorption of the cosmic microwave background by atoms of neutral hydrogen, the researchers say, they could measure the fine-structure [...]

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