Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

Web Extra: Tour 10 autumn binocular highlights

Grab your binoculars and point them at a famous star, several open clusters, a globular cluster, and an enigmatic galaxy.
RELATED TOPICS: STARS AND STAR CLUSTERS
M77
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.

Astronomy magazine subscribers can read the full article for free. Just make sure you're registered with the website.

Already a subscriber? Register now!

Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below.
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT
PlutoEbookpromo

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook