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.

  • New hot Jupiter marks the first collaborative exoplanet discovery
    on July 18, 2017 at 12:52 pm

    Researchers have discovered a new 'Hot Jupiter' exoplanet. […]

  • Smallest-ever star discovered by astronomers
    on July 12, 2017 at 2:00 am

    The smallest star yet measured has been discovered by a team of astronomers. With a size just a sliver larger than that of Saturn, the gravitational pull at its stellar surface is about 300 times stronger than what humans feel on Earth. […]

  • Tracking the birth of a 'super-Earth'
    on July 11, 2017 at 1:28 pm

    'Synthetic observations' simulating nascent planetary systems could help explain a puzzle -- how planets form -- that has vexed astronomers for a long time. […]

  • Cosmic barbecue: Researchers spot 60 new 'hot Jupiter' candidates
    on July 6, 2017 at 4:12 pm

    Sixty potential new 'hot Jupiters' -- highly irradiated worlds that glow like coals on a barbecue grill and are found orbiting only 1% of Sun-like stars -- have been discovered by researchers. […]

  • First discovery of an exoplanet with SPHERE/VLT
    on July 6, 2017 at 11:25 am

    An exoplanet has been discovered by an international team of astronomers by direct imaging using SPHERE, an instrument designed and developed by a consortium of 12 European institutes on the Very Large Telescope ESO, based in Chile. The instrument, which corrects in real time the terrestrial atmospheric turbulences and occults the light of the star, allows to take a real «photography» of the exoplanet. […]

  • Re-making planets after star-death
    on July 6, 2017 at 1:19 am

    Astronomers may have found an answer to the 25-year-old mystery of how planets form in the aftermath of a supernova explosion. […]

  • Under pressure: Extreme atmosphere stripping may limit exoplanets' habitability
    on July 3, 2017 at 12:33 pm

    New models of massive stellar eruptions hint at an extra layer of complexity when considering whether an exoplanet may be habitable or not. Models developed for our own Sun have now been applied to cool stars favored by exoplanet hunters. […]

  • Topsy-turvy motion creates light switch effect at Uranus
    on June 26, 2017 at 1:34 pm

    Uranus' magnetosphere, the region defined by the planet's magnetic field and the material trapped inside it, gets flipped on and off like a light switch every day as it rotates along with the planet, scientists have discovered. It's 'open' in one orientation, allowing solar wind to flow into the magnetosphere; it later closes, forming a shield against the solar wind and deflecting it away from the planet. […]

  • The curious case of the warped Kuiper Belt
    on June 22, 2017 at 2:40 pm

    The plane of the solar system is warped in the belt's outer reaches, signaling the presence of an unknown Mars-to-Earth-mass planetary object far beyond Pluto, according to new research.&nbs […]

  • Ten near-Earth size planets in habitable zone of their star
    on June 20, 2017 at 4:33 pm

    NASA's Kepler space telescope team has released a mission catalog of planet candidates that introduces 219 new planet candidates, 10 of which are near-Earth size and orbiting in their star's habitable zone, which is the range of distance from a star where liquid water could pool on the surface of a rocky planet. […]

  • New branch in family tree of exoplanets discovered
    on June 19, 2017 at 4:02 pm

    Researchers have classified exoplanets in much the same way that biologists identify new animal species. […]

  • Search for Earth-like planets: Try a statistical approach
    on June 14, 2017 at 1:19 pm

    A team of astronomers seeks to change the way scientists approach the search for Earth-like planets orbiting stars other than the sun. They favor taking a statistical comparative approach in seeking habitable planets and life beyond the solar system. […]

  • Jupiter is one old-timer, scientist finds
    on June 12, 2017 at 7:42 pm

    Jupiter is the oldest planet in our solar system, an international group of scientists has found. […]

  • Composition of Earth-size planets in TRAPPIST-1 system
    on June 8, 2017 at 6:55 pm

    An astrophysics researcher has identified the possible compositions of the seven planets in the TRAPPIST-1 system. Using thousands of numerical simulations to identify the planets stable for millions of years, Quarles concluded that six of the seven planets are consistent with an Earth-like composition. The exception is TRAPPIST-1f, which has a mass of 25 percent water, suggesting that TRAPPIST-1e may be the best candidate for future habitability studies. […]

  • Mini-flares potentially jeopardize habitability of planets circling red dwarf stars
    on June 6, 2017 at 4:33 pm

    Solar flares and associated eruptions can trigger auroras on Earth or, more ominously, damage satellites and power grids. Could flares on cool, red dwarf stars cause even more havoc to orbiting planets, even rendering them uninhabitable? To help answer that question, astronomers sought to find out how many flares such stars typically unleash. […]

  • Hubble's tale of two exoplanets: Nature vs. nurture
    on June 5, 2017 at 7:45 pm

    Is it a case of nature versus nurture when it comes to two 'cousin' exoplanets? In a unique experiment, scientists used NASA's Hubble Space Telescope to study two 'hot Jupiter' exoplanets. Because these planets are virtually the same size and temperature, and orbit around nearly identical stars at the same distance, the team hypothesized that their atmospheres should be alike. What they found surprised them. […]

  • A planet hotter than most stars
    on June 5, 2017 at 3:09 pm

    A newly discovered Jupiter-like world is so hot that it’s stretching the definition of the word “planet.&rdquo […]

  • Surface gravity on many exoplanets similar to that of Earth, study finds
    on June 1, 2017 at 1:55 pm

    A recent statistical study has revealed that exoplanets with a mass of between 1 and 100 times the mass of Earth have a surface gravity surprisingly similar to terrestrial gravity. […]

  • Giant ringed planet likely cause of mysterious eclipses
    on May 31, 2017 at 1:25 pm

    A giant gas planet -- up to 50x the mass of Jupiter, encircled by a ring of dust -- is likely hurtling around a star over 1000 light years away from Earth, according to international team of astronomers. […]

  • Kepler telescope spies details of TRAPPIST-1 system's outermost planet
    on May 23, 2017 at 12:18 pm

    A team of astronomers has used data gathered by the Kepler Space Telescope to observe and confirm details of the outermost of seven exoplanets or-biting the star TRAPPIST-1. […]

  • New type of planetary object proposed: Synestia
    on May 23, 2017 at 12:18 pm

    There's something new to look for in the heavens, and it's called a 'synestia,' according to planetary scientists. A synestia, they propose, would be a huge, spinning, donut-shaped mass of hot, vaporized rock, formed as planet-sized objects smash into each other. […]

  • Scientists take first tentative steps to explore potential climate of Proxima B
    on May 15, 2017 at 11:27 pm

    The quest to discover whether a planet orbiting our closest neighboring star, Proxima Centauri (4.2 light years or 25 trillion miles from Earth), has the potential to support life has taken a new, exhilarating twist. […]

  • New 'styrofoam' planet provides tools in search for habitable planets
    on May 15, 2017 at 10:04 pm

    Researchers have discovered a new planet orbiting a star 320 light years from Earth that has the density of styrofoam. This 'puffy' exoplanet may hold opportunities for testing atmospheres that will be useful when assessing future planets for signs of life. […]

  • Primitive atmosphere discovered around 'Warm Neptune'
    on May 11, 2017 at 6:19 pm

    A pioneering new study uncovering the 'primitive atmosphere' surrounding a distant world could provide a pivotal breakthrough in the search to how planets form and develop in far-flung galaxies. […]

  • Two James Webb instruments are best suited for exoplanet atmospheres
    on May 9, 2017 at 6:52 pm

    The best way to study the atmospheres of distant worlds with the James Webb Space Telescope, scheduled to launch in late 2018, will combine two of its infrared instruments, according to a team of astronomers. […]

  • Surprise! When a brown dwarf is actually a planetary mass object
    on May 9, 2017 at 4:20 pm

    Sometimes a brown dwarf is actually a planet -- or planet-like anyway. A team discovered that what astronomers had previously thought was one of the closest brown dwarfs to our own Sun is in fact a planetary mass object. […]

  • 'Iceball' planet discovered through microlensing
    on April 26, 2017 at 4:24 pm

    Scientists have discovered a new planet with the mass of Earth, orbiting its star at the same distance that we orbit our sun. The planet is likely far too cold to be habitable for life as we know it, however, because its star is so faint. But the discovery adds to scientists' understanding of the types of planetary systems that exist beyond our own. […]

  • Newly discovered exoplanet may be best candidate in search for signs of life
    on April 19, 2017 at 5:17 pm

    An exoplanet orbiting a red dwarf star 40 light-years from Earth may be the new holder of the title 'best place to look for signs of life beyond the solar system.' Using ESO's HARPS instrument, and other telescopes, astronomers discovered a 'super-Earth' orbiting in the habitable zone around the star LHS 1140. This world is larger and more massive than the Earth and has likely retained most of its atmosphere. This makes it one of the most exciting targets for atmospheric studies. […]

  • Collisions generate gas in debris disks
    on April 12, 2017 at 2:13 pm

    By examining the atomic carbon line from two young star systems -- 49 Ceti and Beta Pictoris -- researchers had found atomic carbon in the disk, the first time this observation has been made at sub-millimeter wavelength, hinting that the gas in debris disks is not primordial, but rather is generated from some process of collisions taking place in the debris disk. […]

  • Hubble spots auroras on Uranus
    on April 10, 2017 at 4:39 pm

    A composite image of Uranus by Voyager 2 and two different observations made by Hubble shows one for the ring and one for the auroras found around the planet. […]