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Astronomy

Looking for an astronomy fix? We have you covered.

Full Moon rising with grass in the foreground
Drying Grass Moon

Sept. 1, 2020

Catch the Full Moon tonight when you head outdoors for the 8 o'clock howl. CU Boulder occupies Indigenous land belonging to the Arapaho, Cheyenne, and Ute peoples. The Arapaho and Cheyenne called the Full Moon in September the Drying Grass Moon. Leave a comment on our social media channels with...

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Still image of the radiant point for the Perseid Meteor shower
Perseid Meteor Shower

Aug. 11, 2020

The Perseid meteor shower peaks tonight! The last quarter Moon will brighten up the sky, but grab a blanket, stretch out on the lawn and enjoy the show. You’ll find the radiant of the shower in the constellation Perseus which is under Cassiopeia in the northeastern sky. The meteors will...

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In a clean room at NASA's Jet Propulsion Laboratory in Southern California, engineers observed the first driving test for NASA's Mars 2020 rover on Dec. 17, 2019. Image Credit: NASA/JPL-Caltech
Mars 2020 - Godspeed Perseverance!

July 28, 2020

We are beyond EXCITED for NASA’s Mars 2020 Perseverance Rover launch ! The 2-hour launch window starts Thursday 7/30 at 5:50am MDT with a launch opportunity every five minutes! This amazing rover (think Curiosity rover from 2012 on steroids) will collect and store rock/soil samples for future sample return in...

Read more about Mars 2020 - Godspeed Perseverance!

Photo of the comet against a dark blue sky taken by Fiske Planetarium staff just outside Teton National Park, WY on July 18th
Farewell to Comet NEOWISE

July 23, 2020

As Comet NEOWISE gets further from the Sun and becomes harder to see in the Colorado sky, we bode a farewell to the much beloved comet that brightened our summer. It's technically closest to the Earth today (64 million miles), but dimming quickly. The next chance to catch a glimpse...

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Mary Eiberger-Salas took this amazing photo from South Boulder with her iPhone before dawn on July 9th.
A must see comet!

July 15, 2020

There’s a must see comet in the sky this summer! In fact, the brightest comet in the Northern Hemisphere since Hale-Bopp in 1997. Last week, Comet NEOWISE dazzled us before dawn. Now it has transitioned to an evening object. Take a stroll after sunset and look to the NorthWest under...

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Graphic from SkySafari app of the western sky from Boulder and the sun setting on the solstice
Happy Summer Solstice

June 20, 2020

Happy Summer Solstice, everyone! Our Sun reaches its northernmost declination in Earth's sky today and those of us in the Northern Hemisphere enjoy the longest day of the year. Step outside after dinner and take note of how far north of due west the Sun sets.

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A photo of the Ring Nebula M57 from Hubble Space Telescope
Photon Mondays - A ring, a rainbow, and a lyre!

June 1, 2020

A ring, a rainbow, and a lyre are in the sky tonight! Spot the stunning Ring Nebula (M57) near Vega in the constellation Lyra. By the time the light from this nebula reaches your eyes it has traveled approx. 2,000 years. Since the nebula is tilted face on towards us,...

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Milky Way from Echo Lake photo by tyler.gaston_photography
Sunday Masterpieces - The Milky Way

May 31, 2020

Got an astro photo you'd like to share? We'd love to feature it! This week's Fiske Sunday Masterpiece is by @tyler.gaston_photography , taken up at Echo Lake Park back in September. He used a Canon 1Dx Mark II, 16-35mm lens, and an iOptron Skytracker Pro with an 83 second exposure...

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Photo of Scott Kelly's book Endurance at the entrance to Macky
Saturday Astro Reads - 340 Days on the ISS

May 30, 2020

First and foremost, CONGRATULATIONS and GODSPEED to Doug Hurley, Bob Behnken, SpaceX, and NASA for the successful Demo-2 launch today! We -might- still be a bit emotional over here. To continue with our theme lately, we’re featuring retired astronaut Scott Kelly's New York Times bestselling book Endurance: A Year in...

Read more about Saturday Astro Reads - 340 Days on the ISS

Blade Runner 2049 poster with main characters from the film
Friday Flicks - Blade Runner 2049

May 29, 2020

We’re feeling especially futuristic this week with another SpaceX Crew Dragon launch window scheduled for tomorrow at 1:22pm MDT — So, we wanted to feature Blade Runner 2049 as today’s Friday Flick! Starring Ryan Gosling as a new Blade Runner named K, he unearths an old and dangerous secret that...

Read more about Friday Flicks - Blade Runner 2049

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More Astronomy Resources

Photo of the Andromeda galaxy by Stephan Abraas Stargate Observatory in Canon City

Astronomy-related websites

Enjoy our favorite astronomy-related websites for up-to-date information on what’s up in the sky, NASA news, beautiful astronomy images, eclipses, satellites, plus more.

  • Astronomy magazine - The Sky this Week
  • Astronomy Picture of the Day - Each day a different image or photograph of our fascinating universe
  • Heavens-Above - Information about artificial satellites, ISS, HST, and Iridium flares
  • International Dark Sky Association - Videos about Light Pollution
  • NASA - News and mission information
  • NASA - eClips: Bringing STEM alive through NASA real-world connections and a Special Edition newsletter for Earth Day
  • NASA Jet Propulsion Laboratory videos - What’s Up, Mars Report, etc.
  • NASA Eclipse Information - Eclipses of the Sun and Moon
  • Origin of the Constellations from the International Astronomical Union 
  • Sky & Telescope magazine - This Week’s Sky at a Glance
Losing the Dark still image from film of bright sky, trees and buildings

Learn about light pollution

You can learn more about light pollution and how you can help save our starry skies watch "Losing the Dark" from the International Dark Sky Association and Loch Ness Productions. Starry skies are a vanishing treasure because light pollution is washing away our view of the cosmos. It not only threatens astronomy but also disrupts wildlife, and affects human health. The glows over cities and towns — seen so clearly from space — are testament to the billions of dollars spent in wasted energy by lighting up the sky. The video introduces and illustrates some of the issues regarding light pollution and suggests three simple actions people can take to help mitigate it.

To learn more about local efforts to mitigate light pollution check out the Homeowner's Guide to Boulder's Outdoor Lighting Ordinance.

Hubble photo of a galaxy edge on

Got an astro question?

Email us! We'd love to hear from you.

A View from Earth graphic with artistic impression of being in orbit around the Earth

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Fiske Planetarium

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