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. Read the full text on our website: http://serious-science.org/gravitational-lensing-9977 '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 Dark Matter: http://serious-science.org/dark-matter-2-9470 The Essence of Gravity: http://serious-science.org/the-essence-of-gravity-7772 Be the first to find out about our new videos and articles. Learn interesting facts about various topics and people. Discover the answers to the big questions. Be in the know. http://serious-science.org/ Follow us: We are on Patreon: https://www.patreon.com/SeriousScience Facebook — https://www.facebook.com/serious.science.org/ Twitter — https://twitter.com/scienceserious YouTube — /user/SeriousScience Instagram — https://www.instagram.com/serious.science Tumblr — http://serious-science.tumblr.com/ VK — https://vk.com/seriousscience

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