What’s Up in Denver? August 11th through 17th, 2025

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

August 11:

Dr. Kelton
Dr. Phil Kelton

August 12:

Venus and Jupiter Conjunction
Venus and Jupiter Conjunction

August 13:

Observe the Moon
Observe the Moon

August 14:

Dark Sky International: Advocate Action
Dark Sky International: Advocate Action

August 15:

Astronomy in the Park - Photo by NPS
Astronomy in the Park – Photo by NPS

August 16:

Lights Out Lyons
Lights Out Lyons

August 17:

M31 - The Andromeda Galaxy - Photo by Isaac Garfinkle - Skywatcher Esprit120, Dark Frame Optics StellarDrive AZ-EQ6, ZWO ASI094MC-P - Approx. 8hr at 3min per frame, Acquisition - Prism v10 - Processed in Pixinsight and Photoshop
M31 – The Andromeda Galaxy – Photo by Isaac Garfinkle
  • Look for M31 the Andromeda Galaxy to grace our skies as we head into autumn. M31, the Andromeda Galaxy, is the closest large spiral galaxy to our own Milky Way and is visible to the naked eye under dark skies as a faint, elongated smudge in the constellation Andromeda. It’s a barred spiral galaxy located about 2.54 million light-years away, spanning over 220,000 light-years in diameter. With binoculars or a small telescope, its bright core and some dust lanes become visible, and it’s one of the farthest objects the human eye can see without optical aid. Look for M31 in Andromeda in the north eastern skies after 10:30 PM.

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.

  • Perseids: last hour before dawn in western Perseus: up to 50 per hour.
  • alpha Capricornids (CAP): 1:00 AM in northwestern Capricornus: 1 per hour
  • Southern delta Aquariids (SDA): 4:00 AM in western Aquarius: 1 per hour
  • Anthelion (ANT): 2:00 AM in central Capricornus: 1 per hour.
  • kappa Cygnids (KCG) 11:00 PM in northwestern Cygnus: 1 per hour.
  • eta Eridanids (ERI) last hour before dawn in western Eridanus: 1 per hour.

Clear skies and happy stargazing!