In autumn view of the universe offers a wide variety of options for us to enjoy, from star clusters in our Milky Way to the other galaxies that populate space. This guide offers a small sample of what this season has in store for our binoculars.
We kick off our exploration with Delta (δ) Cephei
, the prototype of a class of yellow supergiant variable stars known as Cepheid variables. Over the course of 5.366 days, Delta physically expands and contracts, brightening to magnitude 3.5 and then dimming to magnitude 4.4.
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