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news/2018-20: Measuring the Age of the Universe
Harvard-Smithsonian Center for Astrophysics

Direct link Measuring the Age of the Universe

17 Oct 2018, 17:06 UTC The single most important puzzle in today's cosmology (the study of the universe as a whole) can be summarized in one question: How old is it? For nearly a century -- since the discoveries by Einstein, Hubble, LeMaitre and others led to the big bang model of creation -- we have known the answer.
http://www.nasa.gov/feature/goddard/2018/nasa-s-fermi-mission-energizes-the-sky-with-gamma-ray-constellations: NASA’s Fermi Mission Energizes the Sky With Gamma-ray Constellations
NASA's Goddard Space Flight Center

Direct link NASA’s Fermi Mission Energizes the Sky With Gamma-ray Constellations

17 Oct 2018, 16:30 UTC Long ago, sky watchers linked the brightest stars into patterns reflecting animals, heroes, monsters and even scientific instruments into what is now an official collection of 88 constellations. Now scientists with NASA’s Fermi Gamma-ray Space Telescope have devised a set of modern constellations constructed from sources in the gamma-ray sky to celebrate the mission’s 10th year of operations.
http://www.eso.org/public/news/eso1833/: Largest Galaxy Proto-Supercluster Found
ESO Top News

Direct link Largest Galaxy Proto-Supercluster Found

17 Oct 2018, 15:00 UTC
https://newsroom.usra.edu/magnetic-fields-may-be-the-key-to-black-hole-activity/: Magnetic Fields may be the Key to Black Hole Activity
Universities Space Research Association

Direct link Magnetic Fields may be the Key to Black Hole Activity

16 Oct 2018, 19:07 UTC Collimated jets provide astronomers with some of the most powerful evidence that a supermassive black hole lurks in the heart of most galaxies. Some of these black holes appear to be active, gobbling up material from their surroundings and launching jets at ultra-high speeds, while others are quiescent, even dormant. Why are some black holes feasting and others starving? Recent observations from the Stratospheric Observatory for Infrared Astronomy, or SOFIA, are shedding light on this question.
http://chandra.harvard.edu/photo/2018/kilonova/: All in the Family: Kin of Gravitational-Wave Source Discovered
NASA's Chandra X-ray Observatory

Direct link All in the Family: Kin of Gravitational-Wave Source Discovered

16 Oct 2018, 15:00 UTC A distant cosmic relative to the first source that astronomers detected in both gravitational waves and light may have been discovered, as reported in our latest press release. This object, called GRB 150101B, was first detected by identified as a gamma ray burst (GRB) by NASA's Fermi Gamma-ray Space Telescope in January 2015.
4553 at https://www6.slac.stanford.edu: Missing gamma-ray blobs shed new light on dark matter, cosmic magnetism
SLAC National Accelerator Laboratory

Direct link Missing gamma-ray blobs shed new light on dark matter, cosmic magnetism

15 Oct 2018, 17:00 UTC When astrophysicists look at the gamma-ray glow from a galaxy outside our own, all they typically see is a small spot because the galaxy is extremely far away. So, when a galaxy appears as an extended blob, something extraordinary must be going on that could help researchers better understand the properties of deep space.
http://www.nasa.gov/feature/goddard/2018/update-on-the-hubble-space-telescope-safe-mode: Update on the Hubble Space Telescope Safe Mode
NASA's Goddard Space Flight Center

Direct link Update on the Hubble Space Telescope Safe Mode

12 Oct 2018, 18:00 UTC NASA continues to work toward resuming science operations of the Hubble Space Telescope after the spacecraft entered safe mode due to a failed gyroscope (gyro) on Friday, Oct. 5. Following the gyro failure, the Hubble operations team turned on a backup gyro on the spacecraft. However, that gyro did not perform as expected, reporting rotation rates that are orders of magnitude higher than they actually are. This past week, tests were conducted to assess the condition of that backup gyro. The tests showed that the gyro is properly tracking Hubble’s movement, but the rates reported are consistently higher than the true rates. This is similar to a speedometer on your car continuously showing that your speed is 100 miles per hour faster than it actually is; it properly shows when your car speeds up or slows down, and by how much, but the actual speed is inaccurate. When the spacecraft turns across the sky from one target to the next, the gyro is put into a coarser (high) mode. In this high mode it may be possible to subtract out a consistent large offset to get an accurate reading. However, after the large turns are over, the spacecraft attempts to ...
News.1.30235: Numerous boulders, many rocks, no dust: MASCOT's zigzag course across the asteroid Ryugu
German Aerospace Center (DLR)

Direct link Numerous boulders, many rocks, no dust: MASCOT's zigzag course across the asteroid Ryugu

12 Oct 2018, 08:40 UTC Six minutes of free fall, a gentle impact on the asteroid and then 11 minutes of rebounding until coming to rest. That is how, in the early hours of 3 October 2018, the journey of the MASCOT asteroid lander began on Asteroid Ryugu – a land full of wonder, mystery and challenges.
84057 at http://www.caltech.edu: Dying Star Emits a Whisper
California Institute of Technology

Direct link Dying Star Emits a Whisper

11 Oct 2018, 18:33 UTC A Caltech-led team of researchers has observed the peculiar death of a massive star that exploded in a surprisingly faint and rapidly fading supernova. These observations suggest that the star has an unseen companion, gravitationally siphoning away the star's mass to leave behind a stripped star that exploded in a quick supernova. The explosion is believed to have resulted in a dead neutron star orbiting around its dense and compact companion, suggesting that, for the first time, scientists have witnessed the birth of a compact neutron star binary system.
http://www.nasa.gov/feature/goddard/2018/pulsar-in-a-box-reveals-surprising-picture-of-a-neutron-star-s-surroundings: ‘Pulsar in a Box’ Reveals Surprising Picture of a Neutron Star’s Surroundings
NASA's Goddard Space Flight Center

Direct link ‘Pulsar in a Box’ Reveals Surprising Picture of a Neutron Star’s Surroundings

10 Oct 2018, 14:00 UTC

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