DAVID DUCROS / SCIENCE PHOTO LIBRARY DAVID DUCROS / SCIENCE PHOTO LIBRARY
Binary star system. Artwork of two stars forming part of a binary or double star system. Such a system arises when two stars revolve around each other under their mutual gravitational attraction. The stars can be very close (as here) or much further apart. A large proportion of stars in the Milky Way galaxy (around one-third) are thought to be members of binary star systems.
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