PLANETS & MOONS GALAXIES

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ansa

1. A portion of a ring that appears farthest from the disk of a ringed planet in an image.
   
      • PLANETS AND MOONS



2. One of the extremities of a lenticular galaxy. The word comes from the Latin for "handle," since the earliest views of Saturn's rings suggested that the planet had two handles extending on either side. Plural is ansae.
   
      • GALAXIES