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1. Astronomy News -- ScienceDaily  Mo, 20.11.2017 10:31:28  Alles  RSS-Reader Browser
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Inhalt von "Astronomy News -- ScienceDaily"
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Astronomy News -- ScienceDaily Astronomy News -- ScienceDaily
Astronomy news. New! Earth-like extrasolar planet found; double helix nebula; supermassive black holes, astronomy articles, astronomy pictures. Updated daily.
  • Taking a spin on plasma space tornadoes with NASA observations
    17.11.2017 20:17:38
    Tornado-like swirls of space plasma create tumultuous boundaries in the near-Earth environment, letting dangerous high-energy particles slip into near Earth space, new NASA mission results show.
  • Lava or not, exoplanet 55 Cancri e likely to have atmosphere
    16.11.2017 17:37:43
    Twice as big as Earth, the super-Earth 55 Cancri e was thought to have lava flows on its surface. Now, a new analysis finds this planet likely has an atmosphere whose ingredients could be similar to those of Earth's atmosphere, but thicker.
  • Pluto's hydrocarbon haze keeps dwarf planet colder than expected
    15.11.2017 19:09:40
    The gas composition of a planet's atmosphere generally determines how much heat gets trapped in the atmosphere. For the dwarf planet Pluto, however, the predicted temperature based on the composition of its atmosphere was much higher than actual measurements taken by NASA's New Horizons spacecraft in 2015. A new study proposes a novel cooling mechanism controlled by haze particles to account for Pluto's frigid atmosphere.
  • Listening for gravitational waves using pulsars
    15.11.2017 15:25:21
    When galaxies collide, their central black holes tend to spiral toward each other, releasing gravitational waves in their cosmic dance. To explore this uncharted area of gravitational wave science, researchers look a natural experiment in the sky called a pulsar timing array. Pulsars are dense remnants of dead stars that regularly emit beams of radio waves, which is why some call them "cosmic lighthouses."
  • Closest temperate world orbiting quiet star discovered
    15.11.2017 15:17:47
    A temperate Earth-sized planet has been discovered only 11 light-years from the solar system by a team using ESO's unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life.
  • Zwicky Transient Facility sees 'first light'
    14.11.2017 21:55:28
    A new robotic camera that can capture hundreds of thousands of stars and galaxies in a single shot has taken its first image -- an event astronomers refer to as 'first light.' The camera is the centerpiece of a new automated sky survey called the Zwicky Transient Facility (ZTF).
  • Duo of titanic galaxies captured in extreme starbursting merger
    13.11.2017 18:36:33
    Astronomers have uncovered the never-before-seen close encounter between two astoundingly bright and spectacularly massive galaxies in the early universe.
  • Stellar explosions and cosmic 'recipe' for nearby universe
    13.11.2017 18:36:31
    Thanks to an in-depth look into the composition of gas in the Perseus galaxy cluster, Japan's Hitomi mission has given scientists new insights into the stellar explosions that formed its chemical elements.
  • Anatomy of a cosmic snake reveals structure of distant galaxies
    13.11.2017 17:11:23
    We have a fair understanding of star formation, from the interstellar matter to the diffuse clouds whose gravitational contraction gives birth to stars. But observations of distant galaxies have questioned this picture, the size and mass of these distant stellar nurseries exceeding that of their local counterparts. Astrophysicists have tackled this inconsistency and found the first answers thanks to the observation of the cosmic snake.
  • Expanding light echo spotted around supernova
    09.11.2017 20:10:53
    Hubble images reveal an expanding shell of light from a supernova explosion sweeping through interstellar space three years after the stellar blast was discovered. The "echoing" light looks like a ripple expanding on a pond. The supernova, called SN 2014J, was discovered on Jan. 21, 2014.
  • Dawn spacecraft explores dwarf planet Ceres' interior evolution
    09.11.2017 19:57:03
    Surface features on Ceres -- the largest world between Mars and Jupiter -- and its interior evolution have a closer relationship than one might think. A recent study analyzed Ceres' surface features to reveal clues about the dwarf planet's interior evolution.
  • Astronomers discover a star that would not die
    08.11.2017 19:18:39
    Astronomers have made a bizarre discovery; a star that refuses to stop shining.
  • Cosmos code helps probe space oddities
    07.11.2017 18:29:08
    Cosmos code testbed helps develop new techniques for computational astrophysics. CosmosDG utilizes discontinuous Gelarkin methods, which improved accuracy over previous versions by several orders of magnitude.
  • Shocking results of galaxy-cluster collisions
    07.11.2017 18:28:59
    Combining new images from the Very Large Array with X-Ray and visible-light images reveals the spectacular, energetic outcome when clusters of hundreds of galaxies each collide with each other.
  • Red giant star gives a surprising glimpse of the sun's future
    07.11.2017 15:28:30
    Astronomers have for the first time observed details on the surface of an aging star with the same mass as the sun. ALMA's images show that the star is a giant, its diameter twice the size of Earth's orbit around the sun, but also that the star's atmosphere is affected by powerful, unexpected shock waves.
  • One of the oldest objects in the universe observed
    06.11.2017 17:23:09
    Astronomers report that they have detected the second most distant dusty, star-forming galaxy ever found in the universe -- born in the first one billion years after the Big Bang. It is the oldest object ever detected by the LMT.
  • Forest of molecular signals in star forming galaxy
    06.11.2017 15:00:11
    Astronomers have found a rich molecular reservoir in the heart of an active star-forming galaxy with the Atacama Large Millimeter/submillimeter Array (ALMA). Among eight clouds identified at the center of the galaxy NGC 253, one exhibits very complex chemical composition, while in the other clouds many signals are missing. This chemical richness and diversity shed light on the nature of the baby boom galaxy.
  • Next Mars rover will have 23 'eyes'
    03.11.2017 17:30:16
    NASA's Mars 2020 mission will have more "eyes" than any rover before it: a grand total of 23, to create sweeping panoramas, reveal obstacles, study the atmosphere, and assist science instruments. They will provide dramatic views during the rover's descent to the Red Planet.
  • First direct measurements of high energy electrons in space
    03.11.2017 15:58:10
    The CALET Cosmic Ray experiment has successfully carried out the high-precision measurement of cosmic-ray electron spectrum up to 3 tera electron volts (TeV) by using the CALorimetric Electron Telescope (CALET) on the Japanese Experimental Module, the Exposed Facility on the International Space Station.
  • Return of the comet: 96P spotted by ESA, NASA satellites
    03.11.2017 15:56:38
    Sun-gazing missions SOHO and STEREO watched the return of comet 96P/Machholz when it entered their fields of view between Oct. 25-30. It is extremely rare for comets to be seen simultaneously from two different locations in space, and these are the most comprehensive parallel observations ever taken of this comet.
  • Another close-by planetary system?
    03.11.2017 13:18:23
    The ALMA Observatory in Chile has detected dust around the closest star to the Solar System, Proxima Centauri. These new observations reveal the glow coming from cold dust in a region between one to four times as far from Proxima Centauri as the Earth is from the Sun. The data also hint at the presence of an even cooler outer dust belt and may indicate the presence of an elaborate planetary system.
  • Shedding light on the mystery of matter accretion in young stars
    02.11.2017 23:03:24
    Astronomers are shedding light on the mystery of matter accretion in young stars. Their discovery helps explain how matter accumulates on the surface of a young star and reconciles the theory behind and observations on the accretion process -- a matter of debate among astrophysicists because of the limited number of theoretical models and actual observations.
  • Hubble sees nearby asteroids photobombing distant galaxies
    02.11.2017 18:17:34
    Photobombing asteroids from our solar system have snuck their way into this deep image of the universe taken by NASA's Hubble Space Telescope. These asteroids reside roughly 160 million miles from Earth, yet they've horned their way into this picture of thousands of galaxies scattered across space and time at inconceivably farther distances.
  • Atmospheric beacons guide NASA scientists in search for life
    02.11.2017 17:10:00
    New NASA research proposes a novel approach to sniffing out exoplanet atmospheres. It takes advantage of frequent stellar storms from cool, young dwarf stars to highlight signs of possible life.
  • Study unveils changes in the brain during extended missions in space
    02.11.2017 00:18:56
    A neuroradiologist conducted a study titled 'Effects of Spaceflight on Astronaut Brain Structure as Indicated on MRI,' the results of which will be featured in the Nov. 2 issue of the New England Journal of Medicine.
  • Overlooked Treasure: The First Evidence of Exoplanets
    01.11.2017 22:54:46
    Mount Wilson is the site where some of the key discoveries about our galaxy and universe were made in the early 20th century. But there is a far lesser known, 100-year-old discovery from Mount Wilson -- one that was unidentified and unappreciated until recently: the first evidence of exoplanets.
  • NASA investigates invisible magnetic bubbles in outer solar system
    01.11.2017 20:12:01
    Forty years ago, the twin Voyagers spacecraft were launched to explore the frontiers of our solar system, and have since made countless discoveries, including finding magnetic bubbles around two of the outer planets.
  • One step closer to defining dark matter, GPS satellite atomic clocks on the hunt
    01.11.2017 18:03:14
    One professor who studies the earth and one who studies space came together in the pursuit to detect and define dark matter. They are one step closer. Using 16 years of archival data from GPS satellites that that orbit the earth, the team looked for dark matter clumps in the shape of walls or bubbles and which would extend far out beyond the GPS orbits, the solar system and beyond.
  • Newest dark matter map hints at where astrophysics must go for breakthroughs
    31.10.2017 18:03:00
    Three astrophysicists -- Scott Dodelson, Risa Wechsler and George Efstathiou -- recently participated in a roundtable discussion, hosted by The Kavli Foundation, about new data from the Dark Energy Survey and its implications for understanding the universe's history.
  • Medical-like tools for NASA to study samples of the solar system
    31.10.2017 16:14:48
    A diagnostic tool, similar in theory to those used by the medical profession to noninvasively image internal organs, bones, soft tissue, and blood vessels, could be equally effective at 'triaging' extraterrestrial rocks and other samples before they are shipped to Earth for further analysis.
  • 'Monster' planet discovery challenges formation theory
    31.10.2017 15:51:58
    A giant planet, which should not exist according to planet formation theory, has been discovered around a distant star.
  • Minor merger kicks supermassive black hole into high gear
    31.10.2017 15:18:30
    Astronomers are studying the galaxy M77, which is famous for its super-active nucleus that releases enormous energy. The unprecedented deep image of the galaxy reveals evidence of a hidden minor merger billions of years ago. The discovery gives crucial evidence for the minor merger origin of active galactic nuclei.
  • Monster colliding black holes might lurk on the edge of spiral galaxies
    30.10.2017 20:44:51
    The outskirts of spiral galaxies like our own could be crowded with colliding black holes of massive proportions and a prime location for scientists hunting the sources of gravitational waves, said researchers. Their study identifies an overlooked region potentially rife with orbiting black holes. Identifying host galaxies of merging massive black holes could help explain how orbiting pairs of black holes form.
  • Mystery of raging black hole beams penetrated
    30.10.2017 18:12:41
    They are nature's very own Death Star beams - ultra-powerful jets of energy that shoot out from the vicinity of black holes like deadly rays from the Star Wars super-weapon.
  • Jupiter's X-ray auroras pulse independently
    30.10.2017 17:34:06
    Jupiter's intense northern and southern lights pulse independently of each other according to new research.
  • A light in the dark: NASA sounding rocket probes the dark regions of space
    27.10.2017 22:18:36
    Spread out over unfathomable distances, this cold, diffuse gas between galaxies -- called the intergalactic medium, or IGM for short -- hardly emits any light, making it difficult to study.
  • Small asteroid or comet 'visits' from beyond the solar system
    27.10.2017 16:45:23
    A small, recently discovered asteroid -- or perhaps a comet -- appears to have originated from outside the solar system, coming from somewhere else in our galaxy. If so, it would be the first "interstellar object" to be observed and confirmed by astronomers.
  • Astronomers discover sunscreen snow falling on hot exoplanet
    26.10.2017 19:53:25
    Astronomers have used the Hubble Space Telescope to find a blistering-hot giant planet outside our solar system where the atmosphere 'snows' titanium dioxide -- the active ingredient in sunscreen. These observations are the first detections of this 'snow-out' process, called a 'cold trap,' on an exoplanet. The research provides insight into the complexity of weather and atmospheric composition on exoplanets, and may someday be useful for gauging the habitability of Earth-size planets.
  • Scientists detect comets outside our solar system
    26.10.2017 19:53:16
    Scientists, working closely with amateur astronomers, have spotted the dusty tails of six exocomets -- comets outside our solar system -- orbiting a faint star 800 light years from Earth.
  • James Webb Space Telescope's laser-focused sight
    26.10.2017 19:52:48
    About 1 million miles away from the nearest eye surgeon, NASA's James Webb Space Telescope will be able to perfect its own vision while in orbit.
  • Wobbling galaxies: New evidence for dark matter makes it even more exotic
    26.10.2017 16:31:10
    Astronomers have discovered that the brightest galaxies within galaxy clusters 'wobble' relative to the cluster's center of mass. This unexpected result is inconsistent with predictions made by the current standard model of dark matter. With further analysis it may provide insights into the nature of dark matter, perhaps even indicating that new physics is at work.
  • Comet mission reveals 'missing link' in our understanding of planet formation
    25.10.2017 20:04:20
    The missing link in our understanding of planet formation has been revealed by the first ever spacecraft to orbit and land on a comet, say scientists.
  • Galactic secrets revealed
    25.10.2017 15:05:21
    Countless galaxies vie for attention in this monster image of the Fornax Galaxy Cluster, some appearing only as pinpricks of light while others dominate the foreground. One of these is the lenticular galaxy NGC 1316. The turbulent past of this much-studied galaxy has left it with a delicate structure of loops, arcs and rings that astronomers have now imaged in greater detail than ever before with the VLT Survey Telescope.
  • Spots on supergiant star drive spirals in stellar wind
    24.10.2017 17:56:13
    Astronomers have recently discovered that spots on the surface of a supergiant star are driving huge spiral structures in its stellar wind.
  • NASA's MAVEN mission finds Mars has a twisted magnetic tail
    20.10.2017 00:18:55
    Mars has an invisible magnetic 'tail' that is twisted by interaction with the solar wind, according to new research using data from NASA's MAVEN spacecraft.
  • New NASA study improves search for habitable worlds
    20.10.2017 00:18:49
    New NASA research is helping to refine our understanding of candidate planets beyond our solar system that might support life.
  • Noxious ice cloud on Saturn's moon Titan
    19.10.2017 16:10:34
    Researchers with NASA's Cassini mission found evidence of a toxic hybrid ice in a wispy cloud high above the south pole of Saturn's largest moon, Titan.
  • Solar eruptions could electrify Martian moons
    18.10.2017 18:41:40
    Powerful solar eruptions could electrically charge areas of the Martian moon Phobos to hundreds of volts, presenting a complex electrical environment that could possibly affect sensitive electronics carried by future robotic explorers, according to a new NASA study. The study also considered electrical charges that could develop as astronauts transit the surface on potential human missions to Phobos.
  • Potential human habitat located on the moon
    18.10.2017 16:43:35
    A new study confirms the existence of a large open lava tube in the Marius Hills region of the moon, which could be used to protect astronauts from hazardous conditions on the surface.
  • How bright is the moon, really?
    17.10.2017 22:37:01
    The National Institute of Standards and Technology (NIST) is planning to take new measurements of the Moon's brightness, a highly useful property that satellites rely upon every day.
  • To keep Saturn's A ring contained, its moons stand united
    17.10.2017 18:43:52
    For three decades, astronomers thought that only Saturn's moon Janus confined the planet's A ring -- the largest and farthest of the visible rings. But after poring over NASA's Cassini mission data, astronomers now conclude that the teamwork of seven moons keeps this ring corralled.
  • Catch a fleeting kilonova
    16.10.2017 19:26:54
    Alerted by the first-ever gravitational waves caused by two neutron stars merging, astronomers detect the resulting optical flash.
  • Seeing the light of neutron star collisions
    16.10.2017 18:21:35
    When two neutron stars collided on Aug. 17, a widespread search for electromagnetic radiation from the event led to observations of light from the afterglow of the explosion, finally connecting a gravitational-wave-producing event with conventional astronomy using light, according to an international team of astronomers.
  • Hubble observes source of gravitational waves for the first time
    16.10.2017 18:21:15
    The NASA/ESA Hubble Space Telescope has observed for the first time the source of a gravitational wave, created by the merger of two neutron stars. This merger created a kilonova -- an object predicted by theory decades ago -- that ejects heavy elements such as gold and platinum into space. This event also provides the strongest evidence yet that short duration gamma-ray bursts are caused by mergers of neutron stars.
  • Gravitational waves plus new clues from space reveal new way to make a black hole
    16.10.2017 16:28:38
    For the first time, scientists have detected both gravitational waves and light shooting toward our planet from the birthplace of a new black hole created by the merger of two neutron stars. The discovery marks the beginning of a new era of
  • Gamma-ray burst detection just what researchers exclusively predicted
    16.10.2017 16:28:28
    More than a month before a game-changing detection of a short gamma-ray burst, scientists predicted such a discovery would occur.
  • Radio 'eyes' unlocking secrets of neutron-star collision
    16.10.2017 16:28:25
    When a pair of superdense neutron stars collided and potentially formed a black hole in a galaxy 130 million light-years from Earth, they unleashed not only a train of gravitational waves but also an ongoing torrent of radio waves that are answering some of the biggest questions about the nature of such a cataclysmic event.
  • Astronomers strike cosmic gold, confirm origin of precious metals in neutron star mergers
    16.10.2017 16:28:22
    What many thought would be a long way off, the detection of gravitational waves from the merger of binary neutron stars, actually happened on Aug. 17. The observation of a blue and then red glow from the radioactive debris cloud left behind matched simulations of what the merger should look like, proving that such mergers are the source of most of the very heavy elements in the universe, including gold.
  • First observations of merging neutron stars mark a new era in astronomy
    16.10.2017 16:28:02
    After LIGO detected gravitational waves from the merger of two neutron stars, the race was on to detect a visible counterpart, because unlike the colliding black holes responsible for LIGO's four previous detections, this event was expected to produce an explosion of visible light. Researchers have now found the source of the gravitational waves, capturing the first images of the event with the Swope Telescope in Chile.
  • How scientists used NASA data to predict the corona of the Aug. 21 Total Solar Eclipse
    14.10.2017 17:17:43
    When the total solar eclipse swept across the United States on Aug. 21, 2017, NASA satellites captured a diverse set of images from space. But days before the eclipse, some NASA satellites also enabled scientists to predict what the corona -- the Sun's outer atmosphere -- would look like during the eclipse, from the ground. In addition to offering a case study to test our predictive abilities, the predictions also enabled some eclipse scientists to choose their study targets in advance.
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