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Did GD61 eat a Planetessimal?

The primary method by which astronomers hope to study exoplanet atmospheres is by detecting their absorption spectra as they transit their parent stars. However, another way would be to detect the signal of ...

dateJan 06, 2011 in Astronomy
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A crack in the case for supersolids

New experiments are casting doubt on previously reported observations of supersolid helium. In a paper appearing in the current issue of Physical Review Letters, John Reppy (Cornell University) presents research suggesting that p ...

dateJun 21, 2010 in General Physics
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