... Credit Copyright: ROSAT , MPE , NASA Explanation: The strongest source of X-rays in the Large Magellanic Cloud originates from an unusually energetic binary star system . This strong source, dubbed LMC X-1, is thought to be a normal and compact star orbiting each other. ... The X-rays shining from the system knock electrons off atoms for light years around, causing some atoms to glow noticeably in X-rays when the electrons re-combine. ... NASA Web Site Statements, Warnings, and Disclaimers . ...