Abstract
Observations of the five most simple known cases of gravitational lensing of distant quasars and galaxies by galaxies and clusters of galaxies are used to test Einstein's theory of general relativity and its weak field limit, Newtonian gravity, over distances much larger than the size of the solar system. The observations confirm within error bars the validity of Einstein's General Relativity and its weak field limit, Newtonian Gravity, over galactic and intergalactic distances and the existence of large quantities of dark matter in galaxies and in clusters of galaxies. Uncertainties and incomplete observational data limit the present statistical accuracy of the tests to about ⪅ 30%.Future observations may improve significantly this accuracy and reduce the possibilities for systematic errors.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
