physical double

physical double

1. See double star.
2. See double galaxy.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
New co-worker James (Eisenberg) upsets the balance - he is the physical double of Simon but personality-wise, his exact opposite: confident, engaging and enviably charming around women.
Unlike a physical double, an optical double is a chance alignment of two independent stars.
The diagrams in Figs 5 - 6 and the video clip (Physical double pendulum, 2011) show the chaotic motion of double pendulum.

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