1. Video content

    Video caption: Didier Queloz: Nobel laureate looks forward to planet mission

    Didier Queloz, who won this year's Physics Nobel, is chair of the science team behind the Cheops telescope.

  2. Video content

    Video caption: European space telescope will measure distant worlds

    The Cheops mission will gather information that should reveal the composition of far-off planets.

  3. By Mary Halton

    Science reporter, BBC News

    A blue gas giant with rings, two moons orbit. One looks like Earth but not. The other, Mars.

    Distant moons may be the most plentiful habitats in the galaxy

    Read more
  4. Video content

    Video caption: Nasa's Tess: Planet-hunting satellite lifts off

    Nasa's Transiting Exoplanet Survey Satellite (Tess) searches for new planets.