Dark Matter

Mapping Dark Matter 4.5 Billion Light-years Away

by Shannon Hall July 25, 2014

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

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Missing Light Crisis: The Universe Seems a Little Too Dark

by Shannon Hall July 9, 2014

There are few moments more breathtaking than standing beneath a brilliant starry sky. Thousands of small specks of light mark only the beginning of the vast cosmic arena, with its unimaginable vistas of time and space. The Milky Way, wrapping above in a cosmic sheet of colors and patterns, also hints that there’s more than […]

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Intriguing X-Ray Signal Might be Dark Matter Candidate

by Nancy Atkinson June 24, 2014

Could a strange X-ray signal coming from the Perseus galaxy cluster be a hint of the elusive dark matter in our Universe? Using archival data from the Chandra X-ray Observatory and the XMM-Newton mission, astronomers found an unidentified X-ray emission line, or a spike of intensity at a very specific wavelength of X-ray light. This […]

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Could This Be The Signal Of Dark Matter? Unsure Scientists Checking This Out

by Elizabeth Howell April 4, 2014

Sometimes a strange signal comes from the dark and it takes a while to figure out what that signal means. In this case, scientists analyzing high-energy gamma rays emanating from the galaxy’s center found an unexplained source of emission that they say is “consistent with some forms of dark matter.” The data came courtesy of NASA’s […]

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Weekly Space Hangout – March 7, 2014: Cosmos Premiere & NASA Budget

by Fraser Cain March 7, 2014

Host: Fraser Cain Astrojournalists: David Dickinson, Matthew Francis, Casey Dreier, Jason Major, Brian Koberlein, Alan Boyle This week’s stories: Alan Boyle (@b0yle, cosmiclog.com ): Cosmos premiere! David Andrew Dickinson (@astroguyz): Watch the Close Pass of NEO 2014 DX110 Daylight Saving time: A Spring Forward or a Step Back? A Natural Planetary Defense Against Solar Storms […]

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