View Full Version : Astronomy Without A Telescope Through A Lens Darkly

2010-Dec-04, 09:10 PM
Massive galactic clusters – which are roughly orientated in a plane that is roughly face-on to Earth – can generate strong gravitational lensing. However, several surveys of such clusters have reached the conclusion that these clusters have a tendency towards lensing too much – at least more than is predicted based on their expected mass. [...]

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