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Dark Energy Alternatives to Einstein Are Running Out of Room
Research by University of Arizona astronomy professor Rodger Thompson finds that a popular alternative to Albert Einstein's theory for the acceleration of the expansion of the universe does not fit ... more
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Solar Variability and Terrestrial Climate
In the galactic scheme of things, the Sun is a remarkably constant star. While some stars exhibit dramatic pulsations, wildly yo-yoing in size and brightness, and sometimes even exploding, the lumin ... more
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Cluster Mission Indicates Turbulent Eddies May Warm the Solar Wind
The sun ejects a continuous flow of electrically charged particles and magnetic fields in the form of the solar wind - and this wind is hotter than it should be. A new study of data obtained by Eur ... more
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Testing Einstein's E=mc2 in Outer Space
UA physicist Andrei Lebed has stirred the physics community with an intriguing idea yet to be tested experimentally: The world's most iconic equation, Albert Einstein's E=mc2, may be correct or not ... more
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