Astronomers Happen Upon The Most Distant Lensing Galaxy Ever Discovered

Astronomers using the Hubble Space Telescope have spotted an elliptical galaxy 9.6-billion light years from Earth that is so colossal, its gravity bends and magnifies the light from a galaxy behind it. The rare alignment is the most distant example of a lensing galaxy ever discovered, and could yield insights into the… »8/01/14 11:30am

The Joy of Gravitational Lensing, or Why You Are Seeing Five Lights Instead of One

These five lights are all the same object - a quasar. The middle one is the image we would normally see. The ones on the sides are four extra images that we can only see because there is a galaxy between us and the star. How does something getting between us and the star help us see more of it? We'll tell you the… »11/15/12 9:20am

NASA finds a galactic arc in deep space that has no business being there

NASA scientists working with the Hubble Space Telescope have discovered an arc of light behind an extremely massive cluster of galaxies about 10 billion light-years away. Given that the clusters formed over 13.7 billion years ago at a time when the Universe was very young, there shouldn't really be anything "behind"… »6/27/12 12:45pm