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Giant star
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Welding
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Expanded polystyrene
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Tuff
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Phase transition
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Pear
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Emission spectrometry
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Hiccups
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Local zoning plan
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Sialidase
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Maar
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Pleiades
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Artificial intelligence
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Biopsy
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Internet
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Voice recognition
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Serpentine
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Ghost lineage
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Density
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Stellar aberration
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Asymmetric cryptography
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WPA
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Cryptographic system
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Leukaemia
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Primitive ocean
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Antenna
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Green and blue framework
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HIPS
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Oside
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Increment
Iridescence
Iridescence is the ability of a body to disperse light in coloured rays (like a rainbow).
The wings of some butterflies change colour: this is iridescence. Here, a single lesser purple emperor photographed from different angles. © Jean-Jacques Feldtrauer
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