Science news articles about 'earth mass'

  • A trio of super-Earths

    ... less massive than Uranus and Neptune (about 15 Earth masses). The group of astronomers have now discovered a ... solar-like stars have either super-Earth or Neptune-like planets with orbital periods ...
  • Wobbly planets could reveal Earth-like moons

    ... each time it passes in front of its star, we gain far more reliable information and have the ability to detect an Earth-mass moon around a Neptune-mass gas planet." The appearance of wobbles in a ...
  • Superior Super Earths

    ... are named for their size, but these planets - which range from about 2 to 10 Earth masses - could be superior to the Earth when it comes to sustaining life. They could also provide an answer to the ‘ ...
  • Astronomers find tiny planet orbiting tiny star

    ... slightly above 8 percent of a solar mass, which would make MOA-2007-BLG ... prediction that the first extra-solar Earth-mass planet will be found by microlensing," Bennett said. "But we'll have to be very ...
  • Jupiter's rocky core bigger and icier, according to new simulation

    ... models predicted a much smaller core of only 7 Earth masses, or no core at all. The simulation suggests ... ball of iron and nickel, just like Earth's core. "Our simulations show there is a big rocky ...
  • Transit search finds Super-Neptune

    ... diameter 3.8 times that of Earth and a mass 17 times Earth's, the new world (named HAT- ... large telescopes like Keck, astronomers can determine the mass of the planet. A number of Neptune-like planets ...
  • European team finds smallest transiting extrasolar planet ever

    ... three stars. All our data so far is consistent with the transits being caused by a planet of a few Earth masses, though more data are needed for a precise mass estimate." The discovery of CoRoT-Exo- ...
  • Lightest exoplanet yet discovered

    ... of current exoplanet research is the detection of a rocky, Earth-like planet in the 'habitable zone' — a region around ... 3.15 days. "With only 1.9 Earth-masses, it is the least massive exoplanet ever ...
  • Queen's astronomers propose new supernova interpretation

    ... old white dwarf stars (low-mass stars) in binary systems. The supernova in question ... 50 times smaller than usual. This is the equivalent of converting several earth masses completely into energy.
  • First solid evidence for a rocky exoplanet

    ... example, ice giant Neptune's 17 Earth masses, CoRoT-7b belongs to the category ... small exoplanet. The calculated density is close to Earth's, suggesting that the planet's composition is similarly rocky ...
  • 32 new exoplanets found

    ... 28 planets known with masses below 20 Earth masses. As with the previously detected super- ... lava-covered world, with density similar to that of the Earth's (ESO 33/09). "These observations have given ...
  • The CoRoT space mission: Early results

    ... -7c, it is another super-Earth exoplanet of about 8 Earth masses. The accuracy of the CoRoT data is ... mission, a super CoRoT devoted to finding Earth-size and smaller exoplanets, was launched in March ...

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