Observatories with
smaller views of space have provided exquisite images of other galaxies,
revealing complex structures. But studying our own galaxy’s anatomy is
surprisingly difficult. The plane of the Milky Way covers such a large area on
the sky that studying it in detail can take a very long time. Astronomers also
must peer through thick dust that obscures distant starlight. Infrared light
can pass through that dust and is a key tool for learning about the far side of
our galaxy.
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