Physicist dates lifetime of solar nebula at two million years

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Physicist dates lifetime of solar nebula at two million years
The oxygen and magnesium content of some of the oldest objects in the universe are giving clues to the lifetime of the solar nebula, the mass of dust and gas that eventually led to the formation of our solar system.
By looking at the content of chondrules and calcium aluminum-rich inclusions (CAIs), both components of the primitive meteorite Allende, Lab physicist Ian Hutcheon, with colleagues from the University of Hawaii at Manoa, the Tokyo Institute of Technology and the Smithsonian Institution, found that the age difference between the two fragments points directly to the lifetime of the solar nebula.


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9 hours ago | User rating: not rated yet
(PhysOrg.com) -- When atoms in a crystal are struck by laser light, their electrons, excited by the light, typically begin moving back and forth together in a regular pattern, resembling nanoscale soldiers marching in a lockstep ...

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Nov 18, 2008 | User rating: not rated yet
Our blood, sweat and tears are three precious fluids that can answer lots of questions about the state of our health but testing small amounts of bodily fluids, without contaminating them through contact with ...

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Nov 17, 2008 | User rating: not rated yet
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Nov 17, 2008 | User rating: not rated yet
As the global population continues to grow exponentially, our social connections to one another remain relatively small, as if we're all protagonists in the Kevin Bacon game inspired by "Six Degrees of Separation," ...

Quantum calibration paves way for super-secure communication

Nov 17, 2008 | User rating: not rated yet
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