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1. Astronomy News -- ScienceDaily  Mi, 24.04.2019 04:34:11  Alles  RSS-Reader Browser
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Inhalt von "Astronomy News -- ScienceDaily"
Anzeige-Modus: Alles (alle Einträge mit allen Links, Multimedia-Anhängen und Bildern in Originalgrösse, Text mit Zeilenumbrüchen)
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.
  • Hubble celebrates its 29th birthday with unrivaled view of the Southern Crab Nebula
    Donnerstag, 18.04.2019, 19:14:19 Uhr
    This incredible image of the hourglass-shaped Southern Crab Nebula was taken to mark the NASA/ESA Hubble Space Telescope's 29th anniversary in space. The nebula, created by a binary star system, is one of the many objects that Hubble has demystified throughout its productive life. This new image adds to our understanding of the nebula and demonstrates the telescope's continued capabilities.
  • Mercury has a solid inner core: New evidence
    Mittwoch, 17.04.2019, 19:00:07 Uhr
    Scientists have long known that Earth and Mercury have metallic cores. Like Earth, Mercury's outer core is composed of liquid metal, but there have only been hints that Mercury's innermost core is solid. Now, in a new study, scientists report evidence that Mercury's inner core is indeed solid and that it is very nearly the same size as Earth's solid inner core.
  • Explosion on Jupiter-sized star 10 times more powerful than ever seen on our Sun
    Mittwoch, 17.04.2019, 18:00:41 Uhr
    A stellar flare 10 times more powerful than anything seen on our Sun has burst from an ultracool star almost the same size as Jupiter.
  • Powerful particles and tugging tides may affect extraterrestrial life
    Mittwoch, 17.04.2019, 16:28:40 Uhr
    Two new studies, one on high-energy particles and the other on tidal forces, may bring into question the habitability of TRAPPIST-1 exoplanets.
  • Five planets revealed after 20 years of observation
    Mittwoch, 17.04.2019, 16:27:47 Uhr
    To confirm the presence of a planet, it is necessary to wait until it has made one or more revolutions around its star. This can take from a few days for the closest to the star to decades for the furthest away. Only a telescope dedicated to the search for exoplanets can carry out such measurements over such long periods of time, which is the case of the EULER telescope of UNIGE.
  • How to defend the Earth from asteroids
    Mittwoch, 17.04.2019, 14:46:07 Uhr
    The Chelyabinsk meteor caused extensive ground damage and numerous injuries when it exploded on impact with Earth's atmosphere in 2013; to prevent another such impact, scientists plan to use a simple yet ingenious way to spot tiny near-Earth objects.
  • NASA's Cassini reveals surprises with Titan's lakes
    Dienstag, 16.04.2019, 20:35:50 Uhr
    On its final flyby of Saturn's largest moon in 2017, NASA's Cassini spacecraft gathered radar data revealing that the small liquid lakes in Titan's northern hemisphere are surprisingly deep, perched atop hills and filled with methane.
  • CubeSats prove their worth for scientific missions
    Dienstag, 16.04.2019, 19:21:37 Uhr
    Only a few years ago, the astronomy and heliophysics communities were skeptical about whether CubeSats could reliably obtain scientific data. But these breadloaf-size satellites have proven their ability to return useful data.
  • Astronomers discover third planet in the Kepler-47 circumbinary system
    Dienstag, 16.04.2019, 15:37:53 Uhr
    Astronomers have discovered a third planet in the Kepler-47 system, securing the system's title as the most interesting of the binary-star worlds. Using data from NASA's Kepler space telescope, a team of researchers detected the new Neptune-to-Saturn-size planet orbiting between two previously known planets.
  • Astronomers take first, high-resolution look at huge star-forming region of Milky Way
    Montag, 15.04.2019, 18:23:21 Uhr
    A team of astronomers used a newly commissioned radio telescope in South Korea to make the first high-resolution observations of the molecular clouds within a star-forming region of the Milky Way. The first good look at the galactic region indicated large molecular clouds about 180 light years across with a mass equal to about 100,000 masses of our sun.
  • Meteoroid strikes eject precious water from moon
    Montag, 15.04.2019, 18:23:15 Uhr
    Streams of meteoroids striking the Moon infuse the thin lunar atmosphere with a short-lived water vapor, according to researchers using data from NASA's LADEE spacecraft. The findings will help scientists understand the history of lunar water.
  • TESS finds its first Earth-sized planet
    Montag, 15.04.2019, 18:23:09 Uhr
    A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world. This milestone sets the path for finding smaller planets around even smaller stars, and those planets may potentially be habitable.
  • Tiny fragment of a comet found inside a meteorite
    Montag, 15.04.2019, 17:38:28 Uhr
    Astronomers have made a surprising discovery that gives clues to how solar system formed.
  • Asteroids help scientists to measure the diameters of faraway stars
    Montag, 15.04.2019, 17:38:25 Uhr
    Using the unique capabilities of telescopes specialized on cosmic gamma rays, scientists have measured the smallest apparent size of a star on the night sky to date. The measurements reveal the diameters of a giant star 2,674 light-years away and of a sun-like star at a distance of 700 light-years.
  • Travel through wormholes is possible, but slow
    Montag, 15.04.2019, 15:08:53 Uhr
    A physicist has shown that wormholes can exist: tunnels in curved space-time, connecting two distant places, through which travel is possible. But don't pack your bags for a trip to other side of the galaxy yet; although it's theoretically possible, it's not useful for humans to travel through, said the author of the study.
  • Hubble peers at cosmic blue bauble
    Freitag, 12.04.2019, 17:03:36 Uhr
    Messier 3: containing an incredible half-million stars, this 8-billion-year-old cosmic bauble is one of the largest and brightest globular clusters ever discovered.
  • NASA's landmark Twins Study reveals resilience of human body in space
    Donnerstag, 11.04.2019, 22:51:13 Uhr
    Newly published research reveals some interesting, surprising and reassuring data about how one human body adapted to -- and recovered from -- the extreme environment of space.
  • Formation of a magnetar 6.5 billion light years away
    Donnerstag, 11.04.2019, 17:52:50 Uhr
    Building on recent discoveries about neutron stars, a team of astronomers has identified X-ray observations that are consistent with the merger of two neutron stars. This merger is believed to have formed a magnetar, which is a neutron star with an extremely powerful magnetic field.
  • Working together as a 'virtual telescope,' observatories around the world produce first direct images of a black hole
    Mittwoch, 10.04.2019, 15:10:28 Uhr
    An international team of over 200 astronomers has captured the first direct images of a black hole. They accomplished this remarkable feat by coordinating the power of eight major radio observatories on four continents, to work together as a virtual, Earth-sized telescope.
  • New model accurately predicts harmful space weather
    Dienstag, 09.04.2019, 22:28:09 Uhr
    A new, first-of-its-kind space weather model reliably predicts space storms of high-energy particles that are harmful to many satellites and spacecraft orbiting in the Earth's outer radiation belt.
  • Are brown dwarfs failed stars or super-planets?
    Dienstag, 09.04.2019, 19:58:13 Uhr
    Brown dwarfs fill the 'gap' between stars and the much smaller planets. But how they originate has yet to be fully explained. Astronomers may now be able to answer that question. They discovered that the star v Ophiuchi in the Milky Way is being orbited by two brown dwarfs, which in all probability formed along with the star from a gas and dust disk.
  • Astronomers find evidence of a planet with a mass almost 13 times that of Jupiter
    Montag, 08.04.2019, 22:17:12 Uhr
    Giant Magellan Telescope (GMT), in Chile's Atacama Desert, will help to obtain answers on the formation and evolution of these exotic environments, as well as the possibility of life there.
  • Revolutionary camera allows scientists to predict evolution of ancient stars
    Montag, 08.04.2019, 17:40:05 Uhr
    For the first time scientists have been able to prove a decades old theory on stars thanks to a revolutionary high-speed camera.
  • All microbes and fungi on the International Space Station catalogued
    Montag, 08.04.2019, 14:02:22 Uhr
    A comprehensive catalogue of the bacteria and fungi found on surfaces inside the International Space Station (ISS) is being presented in a study published in the open-access journal Microbiome.
  • Unexpected coronal rain on sun links two solar mysteries
    Freitag, 05.04.2019, 18:42:19 Uhr
    Researchers find coronal rain on the sun in an unexpected place. The findings could create a new link between two of the biggest mysteries in solar physics.
  • Heavy metal planet fragment survives destruction from dead star
    Donnerstag, 04.04.2019, 20:36:54 Uhr
    A fragment of a planet that has survived the death of its star has been discovered by astronomers in a disc of debris formed from destroyed planets, which the star ultimately consumes.
  • Solar wind: And the blobs just keep on coming
    Donnerstag, 04.04.2019, 17:44:37 Uhr
    Scientists re-inspected 45-year-old Helios data, finding long trains of massive blobs -- like lava lamp's otherworldly bubbles, but 50 to 500 times the size of Earth -- that ooze from the sun every 90 minutes or so.
  • VLA makes first direct image of key feature of powerful radio galaxies
    Dienstag, 02.04.2019, 22:45:31 Uhr
    A dusty, doughnut-shaped feature long thought to be an essential part of the 'engines' at the cores of active galaxies is seen for the first time in one of the most powerful galaxies in the Universe.
  • Dark matter is not made up of tiny black holes
    Dienstag, 02.04.2019, 17:30:42 Uhr
    An international team of researchers has put a theory speculated by the late Stephen Hawking to its most rigorous test to date, and their results have ruled out the possibility that primordial black holes smaller than a tenth of a millimeter make up most of dark matter.
  • Calculating temperature inside moon to help reveal its inner structure
    Montag, 01.04.2019, 20:22:04 Uhr
    Little is known about the inner structure of the Moon, but a major step forward was made by a scientist who conducted experiments that enabled her to determine the temperature at the boundary of the Moon's core and mantle.
  • Saturn's rings coat tiny moons
    Donnerstag, 28.03.2019, 22:06:39 Uhr
    New findings have emerged about five tiny moons nestled in and near Saturn's rings. The closest-ever flybys by NASA's Cassini spacecraft reveal that the surfaces of these unusual moons are covered with material from the planet's rings -- and from icy particles blasting out of Saturn's larger moon Enceladus. The work paints a picture of the competing processes shaping these mini-moons.
  • Hubble watches spun-up asteroid coming apart
    Donnerstag, 28.03.2019, 16:26:01 Uhr
    A small asteroid has been caught in the process of spinning so fast it's throwing off material, according to new data.
  • Data flows from NASA's TESS Mission, leads to discovery of Saturn-sized planet
    Mittwoch, 27.03.2019, 22:47:01 Uhr
    Astronomers who study stars have contributed to the analysis of a planet discovered by NASA's new TESS Mission. It's the first planet identified by TESS for which the oscillations -- 'starquakes' -- of the planet's host star could be measured.
  • Rivers raged on Mars late into its history
    Mittwoch, 27.03.2019, 19:20:18 Uhr
    Scientists have catalogued these rivers to conclude that significant river runoff persisted on Mars later into its history than previously thought. According to the study, the runoff was intense -- rivers on Mars were wider than those on Earth today -- and occurred at hundreds of locations on the red planet.
  • GRAVITY instrument breaks new ground in exoplanet imaging
    Mittwoch, 27.03.2019, 13:07:21 Uhr
    The GRAVITY instrument on ESO's Very Large Telescope Interferometer (VLTI) has made the first direct observation of an exoplanet using optical interferometry. This method revealed a complex exoplanetary atmosphere with clouds of iron and silicates swirling in a planet-wide storm. The technique presents unique possibilities for characterizing many of the exoplanets known today.
  • In hunt for life, astronomers identify most promising stars
    Dienstag, 26.03.2019, 21:05:05 Uhr
    NASA's new Transiting Exoplanet Survey Satellite (TESS) is designed to ferret out habitable exoplanets, but with hundreds of thousands of sunlike and smaller stars in its camera views, which of those stars could host planets like our own? A team of astronomers has identified the most promising targets for this search.
  • Ultra-sharp images make old stars look absolutely marvelous!
    Dienstag, 26.03.2019, 15:57:02 Uhr
    Using high-resolution adaptive optics imaging from the Gemini Observatory, astronomers have uncovered one of the oldest star clusters in the Milky Way Galaxy. The remarkably sharp image looks back into the early history of our Universe and sheds new insights on how our Galaxy formed.
  • Hubble captures birth of giant storm on Neptune
    Montag, 25.03.2019, 17:03:55 Uhr
    Images taken by the Hubble Space Telescope document the formation of a Great Dark Spot on Neptune for the first time, report researchers in a new study.
  • Jupiter's unknown journey revealed
    Freitag, 22.03.2019, 15:57:06 Uhr
    The giant planet Jupiter was formed four times further from the sun than its current orbit, and migrated inwards in the solar system over a period of 700,000 years. Researchers found proof of this incredible journey thanks to a group of asteroids close to Jupiter.
  • Giant X-ray 'chimneys' are exhaust vents for vast energies produced at Milky Way's center
    Mittwoch, 20.03.2019, 21:49:12 Uhr
    At the center of our galaxy, where an enormous black hole blasts out energy as it chows down on interstellar detritus while neighboring stars burst to life and explode. astronomers have discovered two exhaust channels -- dubbed the 'galactic center chimneys' -- that appear to funnel matter and energy away from the cosmic fireworks.
  • The rise and fall of Ziggy star formation and the rich dust from ancient stars
    Dienstag, 19.03.2019, 21:35:29 Uhr
    Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away in the constellation Eridanus. Standard models can't explain this much dust in a galaxy this young, forcing us to rethink the history of star formation. Researchers now think MACS0416_Y1 experienced staggered star formation with two intense starburst periods 300 million and 600 million years after the Big Bang with a quiet phase in between.
  • Water-bearing minerals on asteroid Bennu
    Dienstag, 19.03.2019, 18:51:14 Uhr
    Astronomers have discovered evidence of abundant water-bearing minerals on the surface of the near-Earth asteroid (101955) Bennu. Using early spectral data from NASA's OSIRIS-REx spacecraft orbiting the asteroid, the team identified infrared properties similar to those in a type of meteorite called carbonaceous chondrites.
  • Hayabusa2 probes asteroid Ryugu for secrets
    Dienstag, 19.03.2019, 17:59:04 Uhr
    The first data received from the Hayabusa2 spacecraft in orbit of asteroid Ryugu helps space scientists explore conditions in the early solar system. The space probe gathered vast amounts of images and other data which gives researchers clues about Ryugu's history, such as how it may have formed from a larger parent body. These details in turn allow researchers to better estimate quantities and types of materials essential for life that were present as Earth formed.
  • NASA's Fermi Satellite clocks 'cannonball' pulsar speeding through space
    Dienstag, 19.03.2019, 17:42:25 Uhr
    Astronomers have found a runaway pulsar hurtling through space at nearly 2.5 million miles an hour -- so fast it could travel the distance between Earth and the Moon in just 6 minutes.
  • Carbon monoxide detectors could warn of extraterrestrial life
    Dienstag, 19.03.2019, 15:07:32 Uhr
    Scientists have used computer models of chemistry in the biosphere and atmosphere to identify two intriguing scenarios in which carbon monoxide readily accumulates in the atmospheres of living planets. The models show that relatively high amounts of carbon monoxide are compatible with life and should not automatically rule out the possibility of life on some planets.
  • Superbugs have colonized the International Space Station -- but there's a silver lining
    Dienstag, 19.03.2019, 13:39:23 Uhr
    Researchers have taken another small step towards deep space exploration, by testing a new silver- and ruthenium-based antimicrobial coating aboard the International Space Station (ISS). Their study shows that the AGXX® dramatically reduced the number of bacteria on contamination-prone surfaces -- and could help protect future astronauts beyond the moon and Mars.
  • Spiraling giants: Witnessing the birth of a massive binary star system
    Montag, 18.03.2019, 17:10:55 Uhr
    Scientists have made observations of a molecular cloud that is collapsing to form two massive protostars that will eventually become a binary star system. The observations showed that already at this early stage, the cloud contains two objects, a massive 'primary' central star and another 'secondary' forming star, also of high mass.
  • Dormant viruses activate during spaceflight
    Samstag, 16.03.2019, 21:22:11 Uhr
    Herpes viruses reactivate in more than half of crew aboard Space Shuttle and International Space Station missions. While only a small proportion develop symptoms, virus reactivation rates increase with spaceflight duration and could present a significant health risk on missions to Mars and beyond.
  • Bernese Mars camera CaSSIS returns spectacular images
    Donnerstag, 14.03.2019, 17:31:57 Uhr
    Three years ago, on March 14 2016, the Bernese Mars camera CaSSIS started its journey to Mars with the 'ExoMars Trace Gas Orbiter' spacecraft. The camera system has been observing Mars from its primary science orbit since April 2018 and provides high-resolution, color images of the surface. On 2 March 2019, CaSSIS also delivered its first image of InSight, NASA's lander on Mars.
  • A cosmic bat in flight
    Donnerstag, 14.03.2019, 15:13:37 Uhr
    Hidden in one of the darkest corners of the Orion constellation, this Cosmic Bat is spreading its hazy wings through interstellar space 2,000 light-years away. It is illuminated by the young stars nestled in its core -- despite being shrouded by opaque clouds of dust, their bright rays still illuminate the nebula. Too dim to be discerned by the naked eye, NGC 1788 reveals its soft colors to ESO's Very Large Telescope in this image -- the most detailed to date.
  • Neural networks predict planet mass
    Mittwoch, 13.03.2019, 19:32:36 Uhr
    To find out how planets form astrophysicists run complicated and time consuming computer calculations. Scientists have now developed a totally novel approach to speed up this process dramatically. They use deep learning based on artificial neural networks, a method that is well known in image recognition.
  • Astronomers discover 83 supermassive black holes in the early universe
    Mittwoch, 13.03.2019, 16:47:28 Uhr
    Astronomers have discovered 83 quasars powered by supermassive black holes that were formed when the universe was only 5 percent of its current age.
  • ALMA observes the formation sites of solar-system-like planets
    Mittwoch, 13.03.2019, 16:47:26 Uhr
    Researchers have spotted the formation sites of planets around a young star resembling our sun. Two rings of dust around the star, at distances comparable to the asteroid belt and the orbit of Neptune in our solar system, suggest that we are witnessing the formation of a planetary system similar to our own.
  • What scientists found after sifting through dust in the solar system
    Dienstag, 12.03.2019, 17:36:29 Uhr
    Two recent studies report discoveries of dust rings in the inner solar system: a dust ring at Mercury's orbit, and a group of never-before-detected asteroids co-orbiting with Venus, supplying the dust in Venus' orbit.
  • Researchers uncover additional evidence for massive solar storms
    Montag, 11.03.2019, 20:27:44 Uhr
    Solar storms can be far more powerful than previously thought. A new study has found evidence for the third known case of a massive solar storm in historical times. The researchers believe that society might not be sufficiently prepared if a similar event were to happen now.
  • Kepler Space Telescope's first exoplanet candidate confirmed
    Montag, 11.03.2019, 15:12:12 Uhr
    An international team of astronomers announced the confirmation of the first exoplanet candidate identified by NASA's Kepler Mission.
  • Massive twin star discovered snuggling close to its stellar sibling
    Montag, 11.03.2019, 15:11:58 Uhr
    Astronomers have discovered a binary star system with the closest high-mass young stellar objects ever measured, providing a valuable 'laboratory' to test theories on high mass binary star formation.
  • Hubble's dazzling display of 2 colliding galaxies
    Montag, 11.03.2019, 13:19:48 Uhr
    Located in the constellation of Hercules, about 230 million light-years away, NGC 6052 is a pair of colliding galaxies first discovered in 1784. A long time ago gravity drew the two galaxies together into the chaotic state we now observe.
  • LAMP instrument sheds light on lunar water movement
    Freitag, 08.03.2019, 19:33:52 Uhr
    Using the Lyman Alpha Mapping Project (LAMP) aboard NASA's Lunar Reconnaissance Orbiter (LRO), scientists have observed water molecules moving around the dayside of the Moon. A paper describes how LAMP measurements of the atom-thick layer of sparse molecules helped characterize lunar hydration changes over the course of a day.
  • 'Goldilocks' stars may be 'just right' for finding habitable worlds
    Donnerstag, 07.03.2019, 22:19:24 Uhr
    A new study finds a particular class of stars called K stars, which are dimmer than the Sun but brighter than the faintest stars, may be particularly promising targets for searching for signs of life.
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