James Webb telescope uncovers 1st-ever 'Einstein zig-zag' hiding in plain sight — and it could help save cosmology
Space.com   2 days ago
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James Webb telescope uncovers 1st-ever 'Einstein zig-zag' hiding in plain sight — and it could help save cosmology  Livescience.comFirst known double gravitational lens could shed light on universe’s expansion  ScienceAstronomers discover two...