Exoplanets

  1. Astronomy

    AI has found an 8-planet system like ours in Kepler data

    An AI spotted an eighth planet circling a distant star, unseating the solar system as the sole record-holder for most known planets.

    By Maria Temming
  2. Astronomy

    Seven Earth-sized planets entered the spotlight this year

    The discovery of seven Earth-sized planets orbiting a single cool star fuels a debate over what counts as good news in the search for life outside the solar system.

    By Lisa Grossman
  3. Astronomy

    Hot, rocky exoplanets are the scorched cores of former gas giants

    Hot, rocky exoplanets are probably the scorched cores of former gas giants, so astronomers shouldn’t trust them for information about true Earth twins.