By Leonidas Papadopoulos, on February 27th, 2016
An artist’s concept of the Wide Field Infrared Survey Telescope (WFIRST). NASA has officially chosen the infrared-space telescope as the scientific successor to the James Webb Space Telescope, with a projected launch date around the 2024 timeframe. WFIRST is expected to make significant contributions in the study of dark energy and the characterisation […]
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By Leonidas Papadopoulos, on November 27th, 2015
A new theoretical study has shown that Earth may be surrounded by long and very dense hair-like filaments of dark matter, which could potentially be directly observed by dedicated space-based dark matter detectors. Image Credit: NASA/JPL-Caltech
When hunting for dark matter, where would the best place to search for it be? The answer […]
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By Leonidas Papadopoulos, on May 2nd, 2015 The breathtaking image of the Hubble eXtreme Deep Field, which was created from data that had been collected with the Hubble Space Telescope in 2003 and 2004. In order for the image to be created, the space telescope pointed towards a small patch of the sky for a total of 50 days, while […]
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By Emily Carney, on April 1st, 2015 From HubbleSite: “This collage shows images of six different galaxy clusters taken with NASA’s Hubble Space Telescope and Chandra X-ray Observatory. The clusters were observed in a study of how dark matter in clusters of galaxies behaves when the clusters collide. Seventy-two large cluster collisions were studied in total. Using visible-light images from […]
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By Leonidas Papadopoulos, on March 19th, 2015 An illustration showing the distribution of the two dozen known dwarf satellite galaxies around the Milky Way. Astronomers have recently discovered nine more additional such candidate objects below the plane of the galaxy, shown here in red. Image Credit: S. Koposov, V. Belokurov (IoA, Cambridge). Background: 2MASS
The mystery of dark matter has […]
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By Leonidas Papadopoulos, on February 28th, 2015 A view of the Milky Way galaxy in visible wavelengths. Two recent studies have provided more evidence which indicate that our galaxy is dominated in dark matter. In the image, the blue and red dots pinpoint the rotation curve tracers that were used in one of the studies and were colour-coded according to […]
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By Leonidas Papadopoulos, on January 6th, 2015 A composite, multi-wavelength image of the young galaxy cluster XDCP J0044.0-2033, also known as the Gioiello Cluster, which is located 9.6 billion light-years away. In the image, X-ray wavelengths appear purple, infrared appear as large red halos around some galaxies, and visible light appears as are red, green, and blue. Image Credit: X-ray: […]
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By Leonidas Papadopoulos, on September 22nd, 2014 The Alpha Magnetic Spectrometer is seen here at center left, following its installation on the S3 Truss on the International Space Station by the crew of the STS-134 space shuttle mission in 2011. The orbiting particle detector has been continuously collecting data ever since, on high-energy cosmic rays. Image Credit: NASA
Some of […]
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By Paul Scott Anderson, on July 24th, 2014 Composite Chandra image of four supernovae: the Crab Nebula, Tycho, G292.0+1.8, and 3C58. Image Credit: NASA/CXC/SAO
The Chandra X-Ray Observatory, NASA’s space telescope which observes the universe using X-rays, has now completed its 15th year of operations, and astronomers are celebrating the anniversary with a series of special images from the orbiting observatory. […]
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By Leonidas Papadopoulos, on April 9th, 2014 A view of the entire gamma-ray sky from the Fermi Space Telescope, shaded to emphasize the center of the Milky Way. The inset is a map of the galactic center with known sources removed, which reveals the gamma-ray excess (red, green, and blue) found there. This excess emission is consistent with annihilations from […]
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