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.

  • 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. […]

  • More mysteries of metallic hydrogen
    on July 24, 2018 at 3:02 pm

    Liquid metallic hydrogen is not present naturally on Earth and has only been created in a handful of places. Now scientists are researching the properties of liquid metallic hydrogen to understand how planets both inside and outside our solar system form magnetic shields. […]

  • 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. […]