BBC Sky at Night Magazine

Going green


It is known that the colours of the stars are completely defined, which are blue, white, yellow, orange and red. Stars with a green colour or, more precisely, which appear to be green are less familiar. However, during my observatio­ns of binary stars, I noticed some amazing stellar pairs whose accompanyi­ng star tends to appear green. Examples include Gamma Andromedae, Delta Herculis, Zeta Lupi and Eta Lupi. Khalid Alburaidi, Kingdom of Saudi Arabia

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