Summary

Description	An international team of astronomers using Hubble has made the most precise test of general relativity yet outside our 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. You can subscribe to the Hubblecasts in iTunes, receive future episodes on YouTube or follow us on Vimeo. Many other Hubblecast episodes are also available. Find out how to view and contribute subtitles for the Hubblecast in multiple languages, or translate this video on YouTube. Credit: 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,
Date	2018-06-21
Source	commons.wikimedia.org
Author	ESO, ESA, Hubble, M. Kornmesser, J. Colosimo, ALMA, NRAO, NAOJ, L. Calçada and the Hubble Heiratage Team (STScl/AURA).

Licensing

CC BY

Attribution: ESO, ESA, Hubble, M. Kornmesser, J. Colosimo, ALMA, NRAO, NAOJ, L. Calçada and the Hubble Heiratage Team (STScl/AURA)., 2018-06-21