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.

  • Unknown treasure trove of planets found hiding in dust
    on December 7, 2018 at 4:27 pm

    The first unbiased survey of protoplanetary disks surrounding young stars in the Taurus star-forming region turned up a higher-than-expected number of disks with features suggesting nascent planets, according to a new study. […]

  • An exoplanet inflated like a balloon
    on December 6, 2018 at 7:12 pm

    Although helium is a rare element on Earth, it is ubiquitous in the universe. It is, after hydrogen, the main component of stars and gaseous giant planets. Despite its abundance, helium was only detected recently in the atmosphere of a gaseous giant by an international team. The team has observed for the first time how this gas escapes from the overheated atmosphere of an exoplanet, literally inflated with helium. […]

  • Mantle neon illuminates Earth's formation
    on December 5, 2018 at 6:41 pm

    The Earth formed relatively quickly from the cloud of dust and gas around the Sun, trapping water and gases in the planet's mantle, based on neon isotopes from the depths of the Earth and deep space. Apart from settling Earth's origins, the work could help in identifying extrasolar systems that could support habitable planets. […]

  • Combination of space-based and ground-based telescopes reveals more than 100 exoplanets
    on December 3, 2018 at 4:16 pm

    Astronomers using a combination of ground and space based telescopes have reported more than 100 extrasolar planets (exoplanets) in only three months. These planets are quite diverse and expected to play a large role in developing the research field of exoplanets and life in the Universe. […]

  • Climate of small star TRAPPIST 1's seven intriguing worlds
    on November 21, 2018 at 7:24 pm

    New research from astronomers gives updated climate models for the seven planets around the star TRAPPIST-1. The work also could help astronomers more effectively study planets around stars unlike our sun, and better use the resources of the James Webb Space Telescope. […]

  • Exoplanet stepping stones
    on November 20, 2018 at 8:59 pm

    New observations of a young gas giant demonstrate the power of a ground-based method for searching for signatures of life. […]

  • Cold Super-Earth found orbiting closest single star to Sun
    on November 14, 2018 at 6:20 pm

    The nearest single star to the Sun hosts an exoplanet at least 3.2 times as massive as Earth -- a so-called super-Earth. One of the largest observing campaigns to date using data from a world-wide array of telescopes has revealed this frozen, dimly lit world. The newly discovered planet is the second-closest known exoplanet to the Earth. Barnard's star is the fastest moving star in the night sky. […]

  • NASA retires Kepler Space Telescope
    on October 31, 2018 at 1:25 pm

    After nine years in deep space collecting data, NASA's Kepler space telescope has run out of fuel needed for further science operations. NASA has decided to retire the spacecraft within its current, safe orbit, away from Earth. Kepler leaves a legacy of more than 2,600 planet discoveries from outside our solar system, many of which could be promising places for life. […]

  • Some planetary systems just aren't into heavy metal
    on October 24, 2018 at 5:12 pm

    Researchers have discovered that compact, multiple-planet systems are more likely to form around stars that have lower amounts of heavy elements than our own Sun. […]

  • Superflares from young red dwarf stars imperil planets
    on October 18, 2018 at 6:12 pm

    Flares from the youngest red dwarfs surveyed are 100 to 1,000 times more energetic than when the stars are older. This younger age is when terrestrial planets are forming around their stars. […]

  • Double dust ring test could spot migrating planets
    on October 17, 2018 at 3:10 pm

    Astrophysicist now have a way of finally telling whether newly forming planets are migrating within the disc of dust and gas that typically surrounds stars or whether they are simply staying put in the same orbit around the star. […]

  • Giant planets around young star raise questions about how planets form
    on October 15, 2018 at 2:45 pm

    Researchers have identified a young star with four Jupiter and Saturn-sized planets in orbit around it, the first time that so many massive planets have been detected in such a young system. The system has also set a new record for the most extreme range of orbits yet observed: the outermost planet is more than a thousand times further from the star than the innermost one, which raises interesting questions about how such a system might have formed. […]

  • Astronomers find first compelling evidence for a moon outside our solar system
    on October 3, 2018 at 6:29 pm

    On the hunt for distant worlds, researchers have identified an exomoon candidate around the transiting exoplanet Kepler-1625b that indicates the presence of a previously unknown gas-giant moon. […]

  • New extremely distant solar system object found during hunt for Planet X
    on October 2, 2018 at 2:29 pm

    Astronomers have discovered a new extremely distant object far beyond Pluto with an orbit that supports the presence of an even-farther-out, Super-Earth or larger Planet X. […]

  • Astronomers use Earth's natural history as guide to spot vegetation on new worlds
    on September 24, 2018 at 9:44 pm

    By looking at Earth's full natural history and evolution, astronomers may have found a template for vegetation fingerprints -- borrowing from epochs of changing flora -- to determine the age of habitable exoplanets. […]

  • Pluto should be reclassified as a planet, experts say
    on September 7, 2018 at 3:04 pm

    The reason Pluto lost its planet status is not valid, according to new research. […]

  • New exoplanet found very close to its star
    on September 5, 2018 at 8:19 pm

    Using data from NASA's Kepler Space Telescope, an international team has discovered a new exoplanet twice the size of Earth. It orbits its star every six days and is thus very close to it, about 10 times closer than Mercury is to the Sun. […]

  • Water worlds could support life, study says
    on August 31, 2018 at 12:35 pm

    The conditions for life surviving on planets entirely covered in water are more fluid than previously thought, opening up the possibility that water worlds could be habitable, according to a new article. […]

  • Stellar 'swarms' help astronomers understand the evolution of stars
    on August 28, 2018 at 3:47 pm

    Researchers have identified nearly a thousand potential members and 31 confirmed members of stellar associations -- stars of similar ages and compositions that are drifting together through space -- in our own corner of the Milky Way. Their research could help astronomers understand the evolution of stars and the properties of future exoplanet discoveries. […]

  • Jupiter had growth disorders
    on August 27, 2018 at 3:08 pm

    Researchers can now show how Jupiter was formed. Data collected from meteorites had indicated that the growth of the giant planet had been delayed for two million years. Now the researchers have found an explanation: Collisions with kilometer-sized blocks generated high energy, which meant that in this phase hardly any accretion of gas could take place and the planet could only grow slowly. […]

  • Water-worlds are common: Exoplanets may contain vast amounts of water
    on August 18, 2018 at 3:57 pm

    Scientists have shown that water is likely to be a major component of those exoplanets (planets orbiting other stars) which are between two to four times the size of Earth. It will have implications for the search of life in our Galaxy. […]

  • Study of material surrounding distant stars shows Earth's ingredients 'pretty normal'
    on August 15, 2018 at 11:05 pm

    The Earth's building blocks seem to be built from 'pretty normal' ingredients, according to researchers working with the world's most powerful telescopes. Scientists have measured the compositions of 18 different planetary systems from up to 456 light years away and compared them to ours, and found that many elements are present in similar proportions to those found on Earth. This will have implications for finding Earth-like bodies elsewhere. […]

  • Iron and titanium in the atmosphere of an exoplanet
    on August 15, 2018 at 5:05 pm

    Exoplanets can orbit close to their host star. When the host star is much hotter than our sun, then the exoplanet becomes as hot as a star. The hottest 'ultra-hot' planet was discovered last year. A team has now discovered the presence of iron and titanium vapors in the atmosphere of this planet. This detection was made possible by the surface temperature of this planet, which reaches more than 4,000 degrees. […]

  • Ultrahot planets have starlike atmospheres
    on August 9, 2018 at 6:45 pm

    An unusual kind of star-planet hybrid atmosphere is emerging from studies of ultrahot planets orbiting close to other stars. […]

  • Largest haul of extrasolar planets
    on August 7, 2018 at 1:51 pm

    Forty-four planets in planetary systems beyond our own have been unveiled in one go, dwarfing the usual number of confirmations from extrasolar surveys, which is typically a dozen or less. The findings will improve our models of planetary systems and may help researchers investigate exoplanet atmospheres. Novel techniques developed to validate the find could hugely accelerate the confirmation of more extrasolar planet candidates. […]

  • VLA detects possible extrasolar planetary-mass magnetic powerhouse
    on August 3, 2018 at 2:33 pm

    Astronomers have detected a possible planetary-mass object with a surprisingly powerful magnetic field some 20 light-years from Earth. It can help scientists better understand magnetic processes on stars and planets. […]

  • Exoplanets where life could develop as it did on Earth
    on August 1, 2018 at 9:20 pm

    Scientists have identified a group of planets outside our solar system where the same chemical conditions that may have led to life on Earth exist. […]

  • Astronomers assemble 'light-fingerprints' to unveil mysteries of the cosmos
    on July 31, 2018 at 2:42 pm

    Earthbound detectives rely on fingerprints to solve their cases; now astronomers can do the same, using 'light-fingerprints' instead of skin grooves to uncover the mysteries of exoplanets. […]

  • Plate tectonics not needed to sustain life
    on July 30, 2018 at 9:28 pm

    There may be more habitable planets in the universe than we previously thought, according to geoscientists, who suggest that plate tectonics -- long assumed to be a requirement for suitable conditions for life -- are in fact not necessary. […]

  • New family photos of Mars and Saturn from Hubble
    on July 26, 2018 at 8:10 pm

    In summer 2018 the planets Mars and Saturn are, one after the other, in opposition to Earth. During this event the planets are relatively close to Earth, allowing astronomers to observe them in greater detail. Hubble took advantage of this preferred configuration and imaged both planets to continue its long-standing observation of the outer planets in the solar system. […]