Tag: Pluto

  • Nation & World

    Pluto in detail

    Scott Kenyon offers an astrophysicist’s view of the New Horizons mission to Pluto.

    6 minutes
  • Nation & World

    Pluto’s demotion debated

    In 2006, the International Astronomical Union demoted Pluto from its rank as a planet. But after an hourlong debate between planetary science experts on what constitutes a planet, an audience packed into Harvard’s Phillips Auditorium voted to restore it to its place.

    3 minutes