Planck spacecraft

Target entity: Planck spacecraft
Context triple: [European Space Agency, mission, Planck spacecraft]

• A. Herschel Space Observatory
  The Herschel Space Observatory was a European Space Agency space telescope that studied the universe in far-infrared and submillimetre wavelengths, revealing cold and dusty regions such as star-forming clouds and distant galaxies.
• B. Spitzer Space Telescope
  The Spitzer Space Telescope was a NASA infrared space observatory that studied the universe in long-wavelength light, revealing cold, dusty, and distant objects invisible to optical telescopes.
• C. Kepler space telescope
  The Kepler space telescope was a NASA space observatory designed to discover Earth-size exoplanets by continuously monitoring the brightness of over 150,000 stars.
• D. Gaia observatory
  The Gaia observatory is a European Space Agency space telescope designed to create the most precise 3D map of the Milky Way by measuring the positions, distances, and motions of over a billion stars.
• E. James Webb Space Telescope
  The James Webb Space Telescope is a large, space-based observatory designed to study the universe in infrared light, revealing the formation of the first galaxies, stars, and planetary systems with unprecedented sensitivity and resolution.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Planck spacecraft
Target entity description: The Planck spacecraft was a European Space Agency space observatory designed to study the cosmic microwave background radiation with unprecedented precision to improve our understanding of the early universe and cosmology.

• A. Herschel Space Observatory
  The Herschel Space Observatory was a European Space Agency space telescope that studied the universe in far-infrared and submillimetre wavelengths, revealing cold and dusty regions such as star-forming clouds and distant galaxies.
• B. Spitzer Space Telescope
  The Spitzer Space Telescope was a NASA infrared space observatory that studied the universe in long-wavelength light, revealing cold, dusty, and distant objects invisible to optical telescopes.
• C. Kepler space telescope
  The Kepler space telescope was a NASA space observatory designed to discover Earth-size exoplanets by continuously monitoring the brightness of over 150,000 stars.
• D. Gaia observatory
  The Gaia observatory is a European Space Agency space telescope designed to create the most precise 3D map of the Milky Way by measuring the positions, distances, and motions of over a billion stars.
• E. James Webb Space Telescope
  The James Webb Space Telescope is a large, space-based observatory designed to study the universe in infrared light, revealing the formation of the first galaxies, stars, and planetary systems with unprecedented sensitivity and resolution.
• F. None of above. chosen