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    • The Infrared Face of the Andromeda Galaxy

      NASA· 6 days ago

      Figure B, also taken from Spitzer data, is an annotated, close-up view of the dust near the center of the Andromeda galaxy. Blue dotted lines highlight ...

    • Challenge 8 – Exploring Angular Diameter

      NASA· 6 days ago

      Angular size is a property of observing an object with a fixed diameter at different distances. In astronomy, all of the objects you see in the sky can only be compared by their angular size ...