In Deep Galaxy Surveys, Astronomers Get a Boost from Gravity
Wednesday, January 12, 2011 - 14:10
in Astronomy & Space
In a presentation at the American Astronomical Society meeting this week and a related paper in the current issue of the journal Nature, researchers using Hubble Space Telescope archival data say that as many as 20 percent of the most distant galaxies currently detected appear brighter than they actually are, because of an effect called "strong gravitational lensing."