Cos­mic lanterns shed light on space time

Science Illustrated - - SCIENCE UPDATE -

Two gal­ax­ies have merged, and their col­lid­ing gas clouds form many new stars, mak­ing the gal­ax­ies eas­ier to see. They can help us un­der­stand how dark mat­ter and en­ergy af­fect the space time of the uni­verse. We can cal­cu­late the ex­act dis­tance to them in or­der to un­der­stand how mass bends space time.

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