Gravitational Lens (image) Max Planck Institute for Physics Share Print E-Mail Caption Photons are emitted from a galaxy QSO B0218+357 in the direction of the Earth. Due to the gravitational effect of the intervening galaxy B0218+357G photons form two paths that reach Earth with a delay of about 11 days. Photons were observed by both the Fermi-LAT instrument and the MAGIC telescopes. Credit MAGIC Image credits: Daniel Lopez/IAC; Hubble image of B0218+357G credits: NASA/ESA; AGN image credits: NASA E/PO - Sonoma State University, Aurore Simonnet Usage Restrictions Free for use for coverage on this publication Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.