What’s Up in Denver? June 16th through 22nd, 2025

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Here’s a brief look at what’s going on in the Mile High City this week.

June 16:

Mars next to Regulus
Mars next to Regulus – created with Stellarium
  • Look for Mars within a degree of Regulus in the southwestern skies – Mars, the red planet glowing with its distinctive rusty hue, and Regulus, the brightest star in the constellation Leo and known for its bluish-white color. will be easily seen with the naked eye, through binoculars, or in a single low-powered eyepiece through a telescope. Look for them at the base of the Sickle asterism in Leo in the western skies after the sun has set.
  • Titan Shadow Transit across the face of Saturn – Titan transits occur only during the relatively brief time Earth and Saturn both lie nearly on the same plane, which coincides with when the rings appear approximately edge-on.: 2:21 AM – 8:00 AM

June 17:

June 18:

Moon at Ascending Node
Moon at Ascending Node
  • Moon at Ascending Node 3:41 AM
  • Last Quarter Strawberry Moon: 1:19 PM

June 19 (Juneteenth):

The Moon and Saturn
The Moon and Saturn – created with Stellarium
  • Look for the waning crescent Strawberry Moon near Saturn in the constellation Pisces in the early morning eastern sky.
  • There is no Standley Lake Stargazing Program this week in observance of the Juneteenth holiday

June 20 (First Day of Summer):

Credits: NASA/Genna Duberstein
Credits: NASA/Genna Duberstein
  • Summer Solstice – The Sun reaches the farthest point north of the celestial equator, which marks the beginning of summer in the Northern Hemisphere and winter in the Southern Hemisphere.

June 21:

Mercury and Pollux
Mercury and Pollux – created with Stellarium
  • Look for Mercury near Pollux in the constellation Gemini early evening western sky.Mercury, the small and speedy planet, and Pollux, the bright and warm-toned star in the constellation Gemini low in the western twilight sky.

June 22:

The Moon and Venus
The Moon and Venus – created with Stellarium
  • Look for the a small sliver of the waning crescent Strawberry Moon near Venus in the constellation Aries in the early morning eastern sky.

Sky Map

This Week’s Meteoric Activity:

You can keep track of the activity of meteor showers as well as those beyond the limits of visual observing by visiting the NASA Meteor Shower Portal.

  • Anthelion (ANT): 1:00 AM local time in eastern Libra: 1 per hour.
  • The Daytime Arietids (ARI): just before dawn local time in western Aries: less than 1 per hour.

Clear skies and happy stargazing!