Gravitational Lensing — Alan Heavens / Serious Science

Astrostatistician Alan Heavens on general relativity, how lensing can be used to observe dark matter and whether Einstein's theory of gravity might be wrong.

'There are some indications that perhaps the Universe is not quite as clumpy as we expect from lensing. It's not yet significant enough to be a concern but if that's established (that requires better data), then it's an indication that maybe our picture is not quite right and that Einstein's gravity maybe needs changing on large scales or the dark energy is not quite Einstein's cosmological constant.'

Alan Heavens, Professor of Astrostatistics, Imperial College London

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