Gravitational Lensing

A Cosmic Collision: Our Best View Yet of Two Distant Galaxies Merging

by Shannon Hall August 27, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter An international team of astronomers has obtained the best view yet of two galaxies colliding when the universe was only half its current age. Remove this ad Shannon Hall on Google+

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Hubble Spots Farthest Lensing Galaxy Yet

by Shannon Hall July 31, 2014

Sometimes there’s a chance alignment — faraway in the universe, where objects are separated by unimaginable distances measured in billions of light-years — when a galaxy cluster in the foreground intersects light from an even more distant object. The conjunction plays visual tricks, where the galaxy cluster acts like a lens, appearing to magnify and bend […]

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Mapping Dark Matter 4.5 Billion Light-years Away

by Shannon Hall July 25, 2014

The Milky Way measures 100 to 120 thousand light-years across, a distance that defies imagination. But clusters of galaxies, which comprise hundreds to thousands of galaxies swarming under a collective gravitational pull, can span tens of millions of light-years. These massive clusters are a complex interplay between colliding galaxies and dark matter. They seem impossible […]

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Gallery: Incredible Mirages In Space Show Dark Matter, Supernovas And Galaxies

by Elizabeth Howell April 25, 2014

How can an exploding star appear far brighter than expected? This question vexed astronomers since the discovery of PS1-10afx, supernova that was about 30 times more luminous than other Type 1A supernovas. Astronomers have just confirmed in Science that it was likely due to well-known illusion in space. The mirage is called a gravitational lens that happens when […]

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New Hubble View Shows Objects a Billion Times Fainter Than Your Eyes Can See

by Nancy Atkinson April 17, 2014

While this image isn’t as deep as the Hubble Deep Field, this 14-hour exposure by the Hubble Space Telescope shows objects around a billion times fainter than what can be seen with the human eyes alone. Astronomers say this image also offers a remarkable depth of field that lets us see more than halfway to […]

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