It may interest you

  • Attendees at the Open Doors Days 2019 at the Teide Observatory in front of the QUIJOTE Experiment. Credit: IAC.
    Attendees at the Open Doors Days 2019 at the Teide Observatory in front of the QUIJOTE Experiment. Credit: IAC.
  • close-up of the central parts of the Ring nebula
    close-up of the central parts of the Ring nebula