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Cloudy with a chance of radiation: NASA studies simulated radiation

Earth observation of the space environment taken during a night pass by Dr. Kjell Lindgren of the Expedition 44 crew during Scott Kelly’s One-Year Mission aboard the International Space Station (ISS). An aurora with purple and SSRMS arm are visible. Credit: NASA Earth observation of the space environment taken during a night pass by Dr. Kjell Lindgren of the Expedition 44 crew during Scott Kelly’s One-Year Mission aboard the International Space Station (ISS). An aurora with purple and SSRMS arm are visible. Credit: NASA Close In each life a little…

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New insight into galaxy cluster's spectacular 'mini-halo'

VLA image of radio-emitting mini-halo in the Perseus Cluster of galaxies. Radio emission in red; optical in white. Credit: Gendron-Marsolais et al.; NRAO/AUI/NSF; NASA; SDSS. VLA image of radio-emitting mini-halo in the Perseus Cluster of galaxies. Radio emission in red; optical in white. Credit: Gendron-Marsolais et al.; NRAO/AUI/NSF; NASA; SDSS. Close Astronomers using the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have discovered new details that are helping them decipher the mystery of how giant radio-emitting structures are formed at the center of a cluster of galaxies….

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Galaxy alignments traced back 10 billion years

MACS J0416.1-240 is a cluster of galaxies located four billion light years away. A new study based on observations with the Hubble Space Telescope has shown that the most massive galaxies in the universe, which are found in clusters like this, have been aligned with the distribution of neighboring galaxies for at least 10 billion years. Credit: ESA/Hubble, NASA, HST Frontier Fields MACS J0416.1-240 is a cluster of galaxies located four billion light years away. A new study based on observations with the Hubble Space Telescope has shown that the…

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New strategy to search for ancient black holes

Artist’s concept of a black hole accreting gas and producing a jet of high-energy particles. Credit: NASA Artist’s concept of a black hole accreting gas and producing a jet of high-energy particles. Credit: NASA Close An interdisciplinary team of physicists and astronomers at the University of Amsterdam’s GRAPPA Center of Excellence for Gravitation and Astroparticle Physics has devised a new strategy to search for ‘primordial’ black holes produced in the early universe. Such black holes are possibly responsible for the gravitational wave events observed by the Laser Interferometer Gravitational-Wave Observatory….

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VST captures Eagle Nebula and close companions

Two of the sky’s more famous residents share the stage with a lesser-known neighbour in this enormous three gigapixel image from ESO’s VLT Survey Telescope (VST). On the right lies the faint, glowing cloud of gas called Sharpless 2-54, the iconic Eagle Nebula (Messier 16) is in the centre, and the Omega Nebula (Messier 17) to the left. This cosmic trio makes up just a portion of a vast complex of gas and dust within which new stars are springing to life and illuminating their surroundings. Credit: ESO Two of…

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