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Your search has returned 230 articles:
  • News

    The planet-hunting Kepler space telescope is dead

    NASA’s premier planet-hunting space telescope is out of gas.

    The Kepler space telescope can no longer search for planets orbiting other stars, ending the 9½-year mission, officials from the agency announced in a news conference on October 30.

    “Because of fuel exhaustion, the Kepler spacecraft has reached the end of its service life,” said Charlie Sobeck, a project system engineer...

    10/30/2018 - 17:11 Exoplanets
  • News

    Hubble may have spotted the first known exomoon

    The first suspected exomoon is coming into focus. Observations with the Hubble Space Telescope bolster the case for a Neptune-sized moon orbiting a gas exoplanet 8,000 light-years away, astronomers report October 3 in Science Advances. The moon’s existence, if confirmed, would challenge theories of how satellites are born.

    Astronomers David Kipping and Alex Teachey of Columbia University...

    10/03/2018 - 14:00 Astronomy, Exoplanets
  • News in Brief

    The TESS space telescope has spotted its first exoplanet

    The next exoplanet hunt is officially on. NASA’s Transiting Exoplanet Survey Satellite (TESS), which launched in April (SN: 5/12/18, p. 7), has taken its first wide-sky science image and has confirmed its first exoplanet.

    The “first light” image (the moniker for a new telescope’s first useful image), taken August 7 with all four of the telescope’s cameras and released September 17, shows...

    09/18/2018 - 17:23 Exoplanets
  • News

    Astronomers saw the first mass eruption from a star that’s not the sun

    BOSTON — For the first time, a stellar eruption called a coronal mass ejection has been spotted fleeing a distant star.

    Such outbursts of plasma and charged particles are well-known on the sun, and commonly follow a burst of light called a solar flare (SN Online: 4/17/15). Astronomers had detected flares on other stars, but never a corresponding coronal mass ejection, or CME, until now....

    08/07/2018 - 09:00 Astronomy, Exoplanets
  • News

    Next to its solar twins, the sun stands out

    BOSTON — Many sunlike stars are eerie clones, but ours is an individual. A study of solar twins reveals that the sun’s chemical makeup is surprisingly different from that of its nearby peers, while those stars are almost identical to one another. Since a star and its planets are made from the same materials, that may mean the exoplanets orbiting those stars come in just a few flavors. It also...

    08/03/2018 - 12:00 Astronomy, Exoplanets