Photo of a pumpkin in the grass

Halloween - An ancient tradition

Oct. 31, 2023

Happy Halloween everyone! Did you know that today is an astronomical holiday? In ancient times, Halloween was celebrated across the globe by people who had a deep knowledge of the sky. They were in tune with the seasonal rhythms of our planet’s axial tilt and knew it was a cross-quarter...

Graphic from Sky Safari showing the full moon and Jupiter against a star-filled sky

October's Full Moon

Oct. 28, 2023

The Full Moon and Jupiter steal the show tonight. Watch this dynamic duo rise in the east after sunset. They'll both be the brightest, boldest objects in the sky. Check out Sky & Telescope's Sky at a Glance , published every Friday afternoon, for more observing tips. Graphic credit: SkySafari app

Graphic from Sky Safari showing Orionid meteror shower in the eastern sky

Orionid meteor shower

Oct. 21, 2023

The Orionid meteor shower peaks after midnight between 2-6 a.m. (technically 10/22). As the Earth passes through a stream of icy, dusty debris that Halley’s comet left in our orbital path, 15-20 meteors/hour will be visible from a dark sky site without a lot of light pollution. Enjoy these sparkly,...

Photo of a partial solar eclipse with trees on the bottom of the image

Ring of Fire eclipse

Oct. 14, 2023

Are you ready for the partial solar eclipse in Boulder on October 14th? The eclipse will be visible across the Americas and those in the path of annularity from Oregon to Texas , will be treated to an annular eclipse, known as a ring of fire eclipse ! The eclipse...

Students gather to watch a solar eclipse from the CU Boulder campus in 2017. (Credit: Glenn Asakawa/CU Boulder)

A ‘ring of fire’ eclipse is coming. Here’s how to watch!

Oct. 6, 2023

From CU Boulder Today: At about 10:30 a.m. Mountain Time on Saturday, Oct. 14, the moon will pass in front of the sun above much of the western U.S., creating a blazing “ring of fire” in the sky. The event is called an annular eclipse, and it will be the...

Graphic from Sky and Telescope magazine showing the Moon on October 1 and 2 towards the eastern horizon

The Shifty Moon

Oct. 1, 2023

Let the Moon be your guide this month to finding a few celestial treats. Look to the east tonight to spot bright Jupiter to the right of the Moon. Tomorrow, the Pleiades cluster will be to its left. Notice how far the Moon shifts from one night to the next?...

Photo of a full moon rising above a pond with sunset sky and yellow leaves and trees

September's Full Moon

Sept. 28, 2023

September Full Moons go by many names — Harvest Moon, Drying Grass Moon, Corn Moon, Yellow Leaf Moon, Leaves Turning Moon, Autumn Moon and more. Make sure to get outside this season and enjoy the reflected light our celestial companion shines upon us.

Graphic from Sky Safari app showing the silhoutte of a tree with the Moon and Saturn above in the sky


Sept. 26, 2023

Is Saturn your favorite planet? Have you always wanted to see it, but didn’t know where to look? Well, you’re in luck! There are few celestial objects that truly look 3D through binoculars or a small telescope. You’ll find this magnificent, ringed-gem above the Moon tonight. Just look for the...

Photo taken through a wooden oval of the mountains and orange leaves from Gothic, Colorado

Fall Equinox

Sept. 23, 2023

Happy Fall Equinox! Our star, the Sun is directly over Earth’s equator today, creating an equal amount of daylight and nighttime hours (equinox comes from the Latin aequus which means equal and nox means night). Enjoy the day and the ever changing cycles of our planet.

Graphic from Sky Safari showing the southwestern horizon with Antares and the Moon in Scorpius

Pretty View to the Southwest

Sept. 20, 2023

Look to the southwest this evening to catch a pretty sight of the waxing crescent Moon with bright, orange Antares to the left. Graphic credit: SkySafari app