Wickramasinghe published the first definitive book on " Interstellar Grains " in 1967.
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Scientists said the new object might be richer in interstellar grains than any meteorite yet studied.
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Samples of these interstellar grains should provide scientists with a pristine record of the explosive conditions in which they were forged.
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The interstellar medium can produce circularly polarized ( CP ) light from unpolarized light by sequential scattering from elongated interstellar grains aligned in different directions.
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Martin showed that the interstellar medium can convert LP light to CP by scattering from partially aligned interstellar grains having a complex index of refraction.
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So on average, a starlight photon is scattered from a single interstellar grain; multiple scattering ( which produces circular polarization ) is much less likely.
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Instead he predicted that unusual but predictable isotopic compositions would be found within thermally condensed interstellar grains that had condensed during mass loss from stars of differing types.
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Then, in the 1970s, astronomers Fred Hoyle and Chandra Wickramasinghe studied the infrared spectra of interstellar grains of dust and concluded that they were dried, frozen bacteria.
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On one side of the racket will be the comet dust, quite possibly containing interstellar grains that were the building blocks for the solar system 4.6 billion years ago, thus the name Stardust.
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Peter Jenniskens and David F . Blake demonstrated in 1994 that a form of high-density amorphous ice is also created during vapor deposition of water on low-temperature ( < 30 K ) surfaces such as interstellar grains.
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