Light beam
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What links here
Relativistic beaming
Astrophysical jet
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BL Lacertae
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Kepler space telescope
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Relativistic Doppler effect
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Blazar
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Messier 87
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Radio galaxy
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CoRoT
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Active galactic nucleus
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Cosmological principle
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Binary star
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Gamma-ray burst
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Aberration (astronomy)
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