Abstract
LIGHT scattered off particles in circum-terrestrial space may make an appreciable contribution to the zodiacal glow. Just how significant this contribution might be unfortunately is still unknown. The information we have comes directly from the infrared observations by Petersen1 and McQueen2. These show that an appreciable portion of the dust must be in circum-solar orbits, some of it quite near the Sun. Direct observations on the circum-terrestrial components, however, are still ambiguous, despite extensive particle detection experiments from space probes3. Such experiments have been largely sensitive to particles larger than those thought responsible for the zodiacal glow.
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References
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VANÝSEK, V., HARWIT, M. Possibility of a Terrestrial Component in the Doppler Shifted Zodiacal Light. Nature 225, 1231–1232 (1970). https://doi.org/10.1038/2251231a0
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DOI: https://doi.org/10.1038/2251231a0
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