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 the atmospheric components in the atmosphere of a star that recently cannibalized a planet or other large body. White dwarfs offer an [...]

Source: http://www.universetoday.com/82225/did-gd61-eat-a-planetessimal/

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