Gravitational Lensing

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

by Nancy Atkinson April 17, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter 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 […]

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Here’s A Nine-Billion-Year Old Gravitational Lens In Space

by Elizabeth Howell October 17, 2013

Here’s a picture of what deflected light looks like from 9.4 billion years away. This is the most faraway “gravitational lens” that we know of, and a demonstration of how a galaxy can bend the light of an object behind it. The phenomenon was first predicted by Einstein, and is a handy way of measuring […]

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Novel Strategy May Help Target Extraterrestrial Intelligent Life

by Shannon Hall October 15, 2013

Discovering life beyond Earth might just be the holy grail of science. And even though we have yet to find evidence for little green men or blobs of bacteria, astronomers continue to search for elusive signs of life. A novel strategy may help astronomers better target extraterrestrial intelligent life. Dr. Michael Gillon, of the University […]

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Astronomers Spy Early Galaxies Caught In A Cosmic Spiderweb

by Tammy Plotner June 25, 2013

Once upon a time, when the Universe was just about three billion years old, galaxies started to form. Now astronomers using a CSIRO radio telescope have captured evidence of the raw materials these galaxies used to fashion their first stars… cold molecular hydrogen gas, H2. Even though we can’t see it directly, we know it […]

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Where Is Dark Matter Most Dense? Subaru Telescope Gets Some Hints

by Elizabeth Howell June 13, 2013

Put another checkmark beside the “cold dark matter” theory. New observations by Japan’s Subaru Telescope are helping astronomers get a grip on the density of dark matter, this mysterious substance that pervades the universe. We can’t see dark matter, which makes up an estimated 85 percent of the universe, but scientists can certainly measure its […]

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