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1. Extrasolar Planets News -- ScienceDaily  Di, 19.06.2018 19:42:48  Alles  RSS-Reader Browser
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Inhalt von "Extrasolar Planets News -- ScienceDaily"
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Extrasolar Planets News -- ScienceDaily Extrasolar Planets News -- ScienceDaily
Extrasolar Planet News. Astronomers discover extrasolar planets in a nearby star system. Could extrasolar planets support life? Images, full-text articles. Free.
  • Hunting molecules to find new planets
    Montag, 18.06.2018, 17:30:30 Uhr
    It's been impossible to obtain images of an exoplanet, so dazzling is the light of its star. However, astronomers have the idea of detecting molecules that are present in the planet's atmosphere in order to make it visible, provided that these same molecules are absent from its star. Thanks to this innovative technique, the device is sensitive to the selected molecules, making the star invisible and allowing the astronomers to observe the planet.
  • Distant moons may harbor life
    Freitag, 15.06.2018, 03:36:00 Uhr
    Researchers have identified more than 100 giant planets that potentially host moons capable of supporting life. Their work will guide the design of future telescopes that can detect these potential moons and look for tell-tale signs of life, called biosignatures, in their atmospheres.
  • Trio of infant planets discovered around newborn star
    Mittwoch, 13.06.2018, 16:19:28 Uhr
    Two independent teams of astronomers have uncovered convincing evidence that three young planets are in orbit around an infant star known as HD 163296. Using a new planet-finding strategy, the astronomers identified three discrete disturbances in a young star's gas-filled disk: the strongest evidence yet that newly formed planets are in orbit there.
  • Multiple alkali metals in unique exoplanet
    Donnerstag, 07.06.2018, 17:27:35 Uhr
    Scientists have observed a rare gaseous planet, with partly clear skies, and strong signatures of alkali metals in its atmosphere.
  • System with three Earth-sized planets discovered
    Donnerstag, 07.06.2018, 17:27:27 Uhr
    Today marks the discovery of two new planetary systems, one of them hosting three planets with the same size of the Earth.
  • First interstellar immigrant discovered in the solar system
    Montag, 21.05.2018, 15:27:17 Uhr
    A new study has discovered the first known permanent immigrant to our solar system. The asteroid, currently nestling in Jupiter's orbit, is the first known asteroid to have been captured from another star system.
  • NASA's new planet hunter snaps initial test image, swings by Moon toward final orbit
    Freitag, 18.05.2018, 18:19:28 Uhr
    After launching April 18, TESS has completed its lunar flyby to put it on track for its final science orbit, and has released a first test image.
  • Orbital variations can trigger 'snowball' states in habitable zones around sunlike stars
    Dienstag, 15.05.2018, 22:28:13 Uhr
    Aspects of an otherwise Earthlike planet's tilt and orbital dynamics can severely affect its potential habitability -- even triggering abrupt 'snowball states' where oceans freeze and surface life is impossible, according to new research from astronomers.
  • Atmospheric seasons could signal alien life
    Mittwoch, 09.05.2018, 19:54:17 Uhr
    To complement traditional biosignatures, scientists are developing the first quantitative framework for dynamic biosignatures based on seasonal changes in the Earth's atmosphere.
  • Astronomers find exoplanet atmosphere free of clouds
    Montag, 07.05.2018, 17:19:20 Uhr
    Scientists have detected an exoplanet atmosphere that is free of clouds, marking a pivotal breakthrough in the quest for greater understanding of the planets beyond our solar system.
  • Mars growth was stunted by early giant planetary instability
    Montag, 07.05.2018, 14:48:32 Uhr
    An astrophysics team explains why the growth of Mars was stunted by an orbital instability among the outer solar system's giant planets in a new study on the evolution of the young solar system. The study builds on the widely accepted Nice Model, which invokes a planetary instability to explain many peculiar observed aspects of the outer solar system. The research shows how planet accretion (growth) is halted by the outer solar system instability.
  • Hubble detects helium in the atmosphere of an exoplanet for the first time
    Mittwoch, 02.05.2018, 19:18:17 Uhr
    Astronomers using the NASA/ESA Hubble Space Telescope have detected helium in the atmosphere of the exoplanet WASP-107b. This is the first time this element has been detected in the atmosphere of a planet outside the Solar System. The discovery demonstrates the ability to use infrared spectra to study exoplanet extended atmospheres.
  • Ultrahigh-pressure laser experiments shed light on super-Earth cores
    Mittwoch, 25.04.2018, 22:20:39 Uhr
    Using high-powered laser beams, researchers have simulated conditions inside a planet three times as large as Earth. The pressures achieved in this study, up to 1,314 gigapascals (GPa), allowed researchers to gather the highest-pressure X-ray diffraction data ever recorded and generate new, more robust models for the interior structure of large, rocky exoplanets.
  • NASA planet hunter on its way to orbit
    Donnerstag, 19.04.2018, 16:57:26 Uhr
    NASA's Transiting Exoplanet Survey Satellite (TESS) launched on the first-of-its-kind mission to find worlds beyond our solar system, including some that could support life. Researchers will use spectroscopy to determine a planet's mass, density and atmospheric composition. Water, and other key molecules, in its atmosphere can give us hints about a planets' capacity to harbor life.
  • Looking for extrasolar planets: DARKNESS lights the way
    Dienstag, 17.04.2018, 00:56:25 Uhr
    An international team of scientists has developed a new instrument to detect planets around the nearest stars. It is the world's largest and most advanced superconducting camera.
  • Once upon a time, an exoplanet was discovered
    Montag, 16.04.2018, 18:16:21 Uhr
    In recent history, a very important achievement was the discovery, in 1995, of 51 Pegasi b, the first extrasolar planet ever found around a normal star other than the Sun.
  • Circumbinary castaways: Short-period binary systems can eject orbiting worlds
    Donnerstag, 12.04.2018, 19:08:02 Uhr
    Planets orbiting 'short-period' binary stars, or stars locked in close orbital embrace, can be ejected off into space as a consequence of their host stars' evolution, according to new research.
  • Fascinating zoo of discs discovered around young stars
    Mittwoch, 11.04.2018, 17:11:06 Uhr
    New images from the SPHERE instrument on ESO's Very Large Telescope are revealing the dusty discs surrounding nearby young stars in greater detail than previously achieved. They show a bizarre variety of shapes, sizes and structures, including the likely effects of planets still in the process of forming.
  • X-rays could sterilize alien planets in (otherwise) habitable zones
    Dienstag, 03.04.2018, 01:28:19 Uhr
    Intense radiation could strip away the ozone layer of Earth-like planets around other stars and render them uninhabitable, according to a new study.
  • NASA survey seen as steppingstone for astronomy
    Montag, 02.04.2018, 22:06:24 Uhr
    By studying dust in the habitable zones of nearby stars, the HOSTS Survey is helping to determine how big future telescopes should be, which stars are likely candidates for harboring Earth-like planets and what the average star system looks like.
  • Newly-discovered planet is hot, metallic and dense as Mercury
    Dienstag, 27.03.2018, 19:20:14 Uhr
    A hot, metallic, Earth-sized planet with a density similar to Mercury -- situated 339 light years away -- has been detected and characterized by a global team of astronomers.
  • What interstellar visitor 'Oumuamua can teach us
    Dienstag, 27.03.2018, 16:28:11 Uhr
    The first interstellar object ever seen in our solar system, named 'Oumuamua, is giving scientists a fresh perspective on how planets, asteroids and comets form.
  • TRAPPIST-1 planets provide clues to the nature of habitable worlds
    Dienstag, 20.03.2018, 19:13:20 Uhr
    To determine the composition of the TRAPPIST-1 planets, the team used a unique software package that uses state-of-the-art mineral physics calculators. The software, called ExoPlex, allowed the team to combine all of the available information about the TRAPPIST-1 system, including the chemical makeup of the star, rather than being limited to just the mass and radius of individual planets.
  • Interstellar asteroid, 'Oumuamua, likely came from a binary star system
    Montag, 19.03.2018, 17:01:11 Uhr
    New research finds that 'Oumuamua, the rocky object identified as the first confirmed interstellar asteroid, very likely came from a binary star system.
  • 15 new planets confirmed around cool dwarf stars
    Montag, 12.03.2018, 13:50:57 Uhr
    Scientists report the existence of 15 new planets -- including one 'super-Earth' that could harbor liquid water -- orbiting small, cool stars near our solar system. These stars, known as red dwarfs, are of enormous interest for studies of planetary formation and evolution.
  • First laboratory simulation of exoplanet atmospheric chemistry
    Donnerstag, 08.03.2018, 16:51:47 Uhr
    Scientists have conducted the first lab experiments on haze formation in simulated exoplanet atmospheres, an important step for understanding upcoming observations of planets outside the solar system with the James Webb Space Telescope.
  • Hubble finds huge system of dusty material enveloping the young star HR 4796A
    Dienstag, 06.03.2018, 19:17:57 Uhr
    Astronomers have used NASA's Hubble Space Telescope to uncover a vast, complex dust structure, about 150 billion miles across, enveloping the young star HR 4796A.
  • Hubble observes exoplanet atmosphere in more detail than ever before
    Donnerstag, 01.03.2018, 20:41:31 Uhr
    An international team of scientists has used the NASA/ESA Hubble Space Telescope to study the atmosphere of the hot exoplanet WASP-39b. By combining this new data with older data they created the most complete study yet of an exoplanet atmosphere. The atmospheric composition of WASP-39b hints that the formation processes of exoplanets can be very different from those of our own Solar System giants.
  • Scientists discover almost 100 new exoplanets
    Donnerstag, 15.02.2018, 16:57:56 Uhr
    Based on data from NASA's K2 mission an international team of scientists have just confirmed nearly 100 new exoplanets, planets located outside our solar system. This brings the total number of new exoplanets found with the K2 mission up to almost 300.
  • Rocky or gassy? Massive, dense super-Earth planet detected
    Donnerstag, 08.02.2018, 19:17:10 Uhr
    A star about 100 light years away in the Pisces constellation, GJ 9827, hosts what may be one of the most massive and dense super-Earth planets detected to date, according to new research. This new information provides evidence to help astronomers better understand the process by which such planets form.
  • TRAPPIST-1 planets probably rich in water
    Montag, 05.02.2018, 19:43:06 Uhr
    A new study has found that planets orbiting the star TRAPPIST-1 are made mostly of rock, and some could hold more water than Earth. The planets' densities suggest that some of them could have up to 5 percent of their mass in the form of water. The hotter planets closest to their parent star are likely to have dense steamy atmospheres and the more distant ones probably have icy surfaces.
  • Atmospheres of exoplanets in TRAPPIST-1 habitable zone probed
    Montag, 05.02.2018, 17:33:01 Uhr
    Astronomers using the Hubble Space Telescope have conducted the first spectroscopic survey of the Earth-sized planets within the habitable zone around the nearby star TRAPPIST-1. Hubble reveals that at least three of the exoplanets (d, e, and f) do not seem to contain puffy, hydrogen-rich atmospheres similar to gaseous planets such as Neptune. The results, instead, favor more compact atmospheres like those of Earth, Venus, and Mars.
  • A new 'atmospheric disequilibrium' could help detect life on other planets
    Mittwoch, 24.01.2018, 20:16:03 Uhr
    A new study has found a simple approach to look for life that might be more promising than just looking for oxygen.
  • New limit on the definition of a planet proposed
    Dienstag, 23.01.2018, 16:19:56 Uhr
    A planet can be no bigger than about 10 times the size of Jupiter, an astrophysicist has calculated.
  • A 'hot Jupiter' with unusual winds
    Montag, 22.01.2018, 17:09:42 Uhr
    The hottest point on a gaseous planet near a distant star isn't where astrophysicists expected it to be -- a discovery that challenges scientists' understanding of the many planets of this type found in solar systems outside our own.
  • No planets needed for rings around stars: Disk patterns can self-generate
    Donnerstag, 11.01.2018, 21:50:42 Uhr
    A new study shows rings, arcs and spirals in disks around stars may not be caused by planets. They may self-generate.
  • Brown dwarfs found sprinkled among newborn stars in Orion Nebula
    Donnerstag, 11.01.2018, 21:50:39 Uhr
    Astronomers have uncovered the largest known population of brown dwarfs sprinkled among newborn stars in the Orion Nebula.
  • Citizen scientists discover five-planet system
    Donnerstag, 11.01.2018, 20:40:27 Uhr
    In its search for exoplanets -- planets outside of our solar system -- NASA's Kepler telescope trails behind Earth, measuring the brightness of stars that may potentially host planets. The instrument identifies potential planets around other stars by looking for dips in the brightness of the stars that occur when planets cross in front of, or transit, them. Typically, computer programs flag the stars with these brightness dips, then astronomers look at each one and decide whether or not they truly could host a planet candidate.
  • Planets around other stars are like peas in a pod
    Dienstag, 09.01.2018, 20:19:18 Uhr
    A study of 909 planets and 355 stars reveals that, unlike our solar system, other planetary systems are distinguished by strict regularity.
  • NASA's Webb Telescope to investigate mysterious brown dwarfs
    Donnerstag, 04.01.2018, 19:16:11 Uhr
    Twinkle, twinkle, little star, how I wonder what you are. Astronomers are hopeful that the powerful infrared capability of NASA's James Webb Space Telescope will resolve a puzzle as fundamental as stargazing itself -- what IS that dim light in the sky? Brown dwarfs muddy a clear distinction between stars and planets, throwing established understanding of those bodies, and theories of their formation, into question.
  • Tabby's Star: Alien megastructure not the cause of dimming of the 'most mysterious star in the universe'
    Mittwoch, 03.01.2018, 16:11:33 Uhr
    Scientists are one step closer to solving the mystery behind the 'most mysterious star in the universe.'
  • Star in the constellation Pisces is 'eating' planets
    Donnerstag, 21.12.2017, 22:07:37 Uhr
    Astronomers have discovered that a distant star called RZ Picseum in the constellation Pisces is crushing one or more planets into its orbit into a vast cloud of gas and dust.
  • Orbital mayhem around a red dwarf
    Montag, 18.12.2017, 18:03:48 Uhr
    In the collective imagination, planets of a solar system all circle around their star, in the equatorial plane of the star. The star also spins, and its spin axis is aligned with the spin axes of the planetary orbits, giving the impression of a well-ordered system. But nature is capricious, as astronomers just found out: they detected a planetary system turned upside down.
  • New approach for detecting planets in the Alpha Centauri system
    Montag, 18.12.2017, 18:02:34 Uhr
    Astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there. According to a study, there may be small, Earth-like planets in Alpha Centauri that have been overlooked. Meanwhile, the study ruled out the existence of a number of larger planets in the system.
  • Better way to weigh millions of solitary stars
    Donnerstag, 14.12.2017, 22:40:30 Uhr
    Astronomers have come up with a new and improved method for measuring the masses of millions of solitary stars, especially those with planetary systems.
  • Artificial intelligence, NASA data used to discover eighth planet circling distant star
    Donnerstag, 14.12.2017, 20:14:16 Uhr
    Our solar system now is tied for most number of planets around a single star, with the recent discovery of an eighth planet circling Kepler-90, a Sun-like star 2,545 light years from Earth. The planet was discovered in data from NASA's Kepler Space Telescope.
  • Spanning disciplines in the search for life beyond Earth
    Mittwoch, 13.12.2017, 18:47:39 Uhr
    Following a gold rush of exoplanet discovery, the next step in the search for life is determining which of the known exoplanets are proper candidates for life -- and for this, a cross-disciplinary approach is essential.
  • Mars mission sheds light on habitability of distant planets
    Mittwoch, 13.12.2017, 18:47:33 Uhr
    Insights from NASA's Mars Atmosphere and Volatile Evolution, or MAVEN, mission about the loss of the Red Planet's atmosphere can help scientists understand the habitability of rocky planets orbiting other stars.
  • Two Super-Earths around red dwarf K2-18
    Dienstag, 05.12.2017, 17:59:44 Uhr
    New research has revealed that a little-known exoplanet called K2-18b could well be a scaled-up version of Earth. Just as exciting, the same researchers also discovered for the first time that the planet has a neighbor.
  • WASP-18b has smothering stratosphere without water
    Dienstag, 05.12.2017, 16:41:41 Uhr
    Scientists have found evidence that the oversized planet WASP-18b is wrapped in a smothering stratosphere loaded with carbon monoxide and devoid of water.
  • New spin to solving mystery of stellar companions
    Dienstag, 05.12.2017, 15:15:55 Uhr
    Scientists are investigating the nature of planetary-mass bodies that orbit stars, finding new clues to their origins.
  • Blowing in the stellar wind: Scientists reduce the chances of life on exoplanets in so-called habitable zones
    Freitag, 01.12.2017, 00:00:31 Uhr
    A new article describes the detrimental impact of stellar wind on the atmosphere of exoplanets.
  • Space dust may transport life between worlds, research suggests
    Montag, 20.11.2017, 17:13:26 Uhr
    Life on Earth might have originated from tiny organisms brought to our planet in streams of fast-moving space dust, according to a new study.
  • Lava or not, exoplanet 55 Cancri e likely to have atmosphere
    Donnerstag, 16.11.2017, 17:37:43 Uhr
    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.
  • Closest temperate world orbiting quiet star discovered
    Mittwoch, 15.11.2017, 15:17:47 Uhr
    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.
  • Red giant star gives a surprising glimpse of the sun's future
    Dienstag, 07.11.2017, 15:28:30 Uhr
    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.
  • Atmospheric beacons guide NASA scientists in search for life
    Donnerstag, 02.11.2017, 17:10:00 Uhr
    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.
  • Overlooked Treasure: The First Evidence of Exoplanets
    Mittwoch, 01.11.2017, 22:54:46 Uhr
    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
    Mittwoch, 01.11.2017, 20:12:01 Uhr
    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.
  • 'Monster' planet discovery challenges formation theory
    Dienstag, 31.10.2017, 15:51:58 Uhr
    A giant planet, which should not exist according to planet formation theory, has been discovered around a distant star.
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