ESOcast 166 Light

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ESOcast 166 Light
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Summary

Description Astronomers have made the most precise test ever of general relativity outside the Milky Way.
A nearby galaxy acts as a strong gravitational lens, distorting light from a distant galaxy behind it to create an Einstein ring around its centre. By comparing the mass of the lensing galaxy with the curvature of space around it, the astronomers found that gravity on these astronomical length-scales behaves as predicted by general relativity.
The video is available in 4K UHD.
The ESOcast Light is a series of short videos bringing you the wonders of the Universe in bite-sized pieces. The ESOcast Light episodes will not be replacing the standard, longer ESOcasts, but complement them with current astronomy news and images in ESO press releases.
Credit:ESO
Directed by: Nico Bartmann.
Editing: Nico Bartmann.
Web and technical support: Mathias André and Raquel Yumi Shida.
Written by: Stephen Molyneux and Richard Hook.
Music: tonelabs (http://www.tonelabs.com).
Footage and photos: ESO, ESA, Hubble,
Date 2018-06-21
Source commons.wikimedia.org
Author ESO

Licensing

Creative Commons

CC BY

Attribution: ESO, 2018-06-21

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