A massive celestial object, such as a large galaxy or cluster of galaxies, that bends the light from objects behind it, magnifying the objects or causing multiple images of the same object[1]
References[]
- ^ Baumann, Mary K.; Will Hopkins, Loralee Nolletti, Michael Soluri, Steven Hawking (foreword) and Ray Villard (astronomy consultant) (2007). Cosmos: Images From Here to the Edge of the Universe. London: Duncan Baird Publishers. ISBN 1844834761 Check
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