Ready for a celestial spectacle that’s both breathtaking and historically rich? Tonight, the skies gift us with Caroline’s Rose, a stunning open cluster that’s as fascinating as its name suggests. Officially known as NGC 7789, this cosmic gem shines brightly in the constellation Cassiopeia the Queen, making it a perfect target for our moonless evening. But here’s where it gets even more intriguing: this cluster was first discovered by Caroline Herschel in 1783, and its nickname comes from the way its stars appear to form delicate, rose-like loops amidst dark voids—a sight that’s both poetic and scientifically captivating.
If you’re wondering what else the sky has in store this week, don’t miss our full Sky This Week column (https://www.astronomy.com/observing/the-sky-this-week-from-january-16-to-23-2026/), where we highlight everything from planetary alignments to deep-sky wonders. For instance, on January 17, Titan cozies up to Saturn (https://www.astronomy.com/observing/the-sky-today-saturday-january-17-2026/), offering a rare glimpse of this moon-planet duo.
Back to tonight’s star—Caroline’s Rose. With the New Moon occurring at 2:52 P.M. EST, the sky is darker than ever, creating the ideal conditions for deep-sky observing. Shining at magnitude 6.7, this cluster is a young yet ancient beauty—its stars are over 1 billion years old, making it one of the older open clusters in our Milky Way. To find it, look north near Caph (Beta [β] Cassiopeiae), the star that appears closest to the ground in Cassiopeia’s iconic upside-down M shape around 9 P.M. local time. From there, it’s just a short hop 2.9° south-southwest to NGC 7789, spanning about 16’ in the sky.
But here’s the part most people miss: While Caroline’s Rose is often celebrated for its aesthetic appeal, its age raises intriguing questions about star cluster evolution. How did these stars manage to stay together for over a billion years? And what does this tell us about the dynamics of our galaxy? These are the kinds of mysteries that make stargazing not just a hobby, but a journey into the unknown.
For your convenience, here are tonight’s key times (from 40° N 90° W):
- Sunrise: 7:19 A.M.
- Sunset: 5:03 P.M.
- Moonrise: 7:32 A.M.
- Moonset: 4:54 P.M.
- Moon Phase: New
So, grab your telescope or binoculars, find a dark spot, and let Caroline’s Rose sweep you off your feet. And while you’re at it, here’s a thought-provoking question: Do you think Caroline Herschel gets enough credit for her contributions to astronomy? Let us know in the comments—we’d love to hear your take!
