April 2007 - A ‘five-star’ rated gravitational lens
The most unique feature in a new image taken with the NASA/ESA Hubble Space Telescope is a group of five quasar images produced by a process called gravitational lensing, in which the gravitational field of a massive object - in this case, a cluster of galaxies - bends and amplifies light from an object - in this case, a quasar – farther behind it.
Credit:European Space Agency, NASA, Keren Sharon (Tel-Aviv University) and Eran Ofek (CalTech)
About the Calendar
| Id: | cal200704 |
| Year: | 2007 |
| Month: | 4 |
