What Is X -ray Binaries ?

1.	What Is X -ray Binaries ?
Answer» They are a CLASS of binary STARS that are LUMINOUS in X - RAYS. They are a class of binary stars that are luminous in X - rays.

Answer»

They are a CLASS of binary STARS that are LUMINOUS in X - RAYS.

They are a class of binary stars that are luminous in X - rays.

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