Extrasolar Planets

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.

  • Finding a planet with a 10 year orbit in just a few months
    on July 18, 2018 at 1:25 pm

    To discover the presence of a planet around stars, astronomers wait until it has completed three orbits. However, this effective technique has its drawbacks since it cannot confirm the presence of planets at relatively long periods. To overcome this obstacle, astronomers have developed a method that makes it possible to ensure the presence of a planet in a few months, even if it takes 10 years to circle its star. […]

  • A dozen new moons of Jupiter discovered, including one 'oddball'
    on July 17, 2018 at 2:12 pm

    Twelve new moons orbiting Jupiter have been found -- 11 'normal' outer moons, and one that they're calling an 'oddball.' Astronomers first spotted the moons in the spring of 2017 while they were looking for very distant solar system objects as part of the hunt for a possible massive planet far beyond Pluto. […]

  • Astronomers find a famous exoplanet's doppelganger
    on July 17, 2018 at 1:48 pm

    A new planet has been imaged, and it appears nearly identical to one of the best studied gas-giant planets. But this doppelganger differs in one very important way: Its origin. One object has long been known: the 13-Jupiter-mass planet beta Pictoris b, one of the first planets discovered by direct imaging, back in 2009. The new object, dubbed 2MASS 0249 c, has the same mass, brightness, and spectrum as beta Pictoris b. […]

  • Rocky planet neighbor looks familiar, but is not Earth's twin
    on July 10, 2018 at 4:28 pm

    Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light years away from Earth. New work has for the first time determined detailed chemical abundances of the planet's host star, Ross 128. […]

  • 'Cataclysmic' collision shaped Uranus' evolution
    on July 2, 2018 at 9:09 pm

    Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research. […]

  • First confirmed image of newborn planet caught with ESO's VLT
    on July 2, 2018 at 1:40 pm

    SPHERE, a planet-hunting instrument on ESO's Very Large Telescope, has captured the first confirmed image of a planet caught in the act of forming in the dusty disc surrounding a young star. The young planet is carving a path through the primordial disc of gas and dust around the very young star PDS 70. The data suggest that the planet's atmosphere is cloudy. […]

  • More clues that Earth-like exoplanets are indeed Earth-like
    on June 28, 2018 at 7:17 pm

    Researchers suggest that two Earth-like exoplanets (Kepler-186f and 62f) have very stable axial tilts, much like the Earth, making it likely that each has regular seasons and a stable climate. […]

  • Scientists develop new strategies to discover life beyond earth
    on June 28, 2018 at 2:51 pm

    Scientists now think we may be able to detect signs of life on planets beyond our solar system in the next few decades, but to do so new tools and techniques will be required. Researchers from around the world just produced a roadmap to develop the techniques that may finally answer the question of whether we are alone in the Universe. […]

  • Scientists developing guidebook for finding life beyond Earth
    on June 25, 2018 at 11:26 pm

    Some of the leading experts in the field, including a UC Riverside team of researchers, have written a major series of review papers on the past, present, and future of the search for life on other planets. […]

  • Nearly 80 exoplanet candidates identified in record time
    on June 21, 2018 at 4:19 pm

    Scientists have analyzed data from K2, the follow-up mission to NASA's Kepler Space Telescope, and have discovered a trove of possible exoplanets amid some 50,000 stars. The scientists report the discovery of nearly 80 new planetary candidates, including a particular standout: a likely planet that orbits the star HD 73344, which would be the brightest planet host ever discovered by the K2 mission. […]

  • Hunting molecules to find new planets
    on June 18, 2018 at 3:30 pm

    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
    on June 15, 2018 at 1:36 am

    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
    on June 13, 2018 at 2:19 pm

    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
    on June 7, 2018 at 3:27 pm

    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
    on June 7, 2018 at 3:27 pm

    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
    on May 21, 2018 at 1:27 pm

    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
    on May 18, 2018 at 4:19 pm

    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
    on May 15, 2018 at 8:28 pm

    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
    on May 9, 2018 at 5:54 pm

    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
    on May 7, 2018 at 3:19 pm

    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
    on May 7, 2018 at 12:48 pm

    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
    on May 2, 2018 at 5:18 pm

    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
    on April 25, 2018 at 8:20 pm

    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
    on April 19, 2018 at 2:57 pm

    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
    on April 16, 2018 at 10:56 pm

    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
    on April 16, 2018 at 4:16 pm

    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
    on April 12, 2018 at 5:08 pm

    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
    on April 11, 2018 at 3:11 pm

    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
    on April 2, 2018 at 11:28 pm

    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
    on April 2, 2018 at 8:06 pm

    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. […]