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Astronomy

Looking for an astronomy fix? We've got you covered.

Interested in stargazing? Visit Sommers-Bausch Observatory (next to Fiske) --- the observatory provides free open houses throughout the year.

Photo of the Veil Nebula courtesy of Stephan Abraas, Stargate Observatory

Lights out colorado logo with birds and stars
Lights Out Colorado

May 4, 2021

The International Dark-sky Association & Denver Audubon have teamed up for Lights Out Colorado . 80% of birds in North America migrate at night. Coloradans can save millions of birds as they migrate over our state, keep our skies darker, & save energy w/ 2 simple steps: Shield outdoor lights...

Read more about Lights Out Colorado

Photo of the Full Moon with some clouds Photo Credit: NASA/Joel Kowsky  
Full Pink Moon

April 27, 2021

Did you catch the Full Pink Moon last night? If not, don’t worry, it’ll still appear big and bright tonight too. Grab your binos or small scope and check out Sky & Telescope’s 7 Easy Things to See on the ‘SuperMoon.’ If it rains, you can always catch the next...

Read more about Full Pink Moon

NASA SpaceX-Crew-2 four Astronauts
NASA SpaceX Crew-2 Mission scheduled to launch

April 20, 2021

NASA’s SpaceX Crew-2 is ready to launch to the ISS on April 22! The Crew-2 flight includes mission specialist Thomas Pesquet from ESA, pilot Megan McArthur and commander Shane Kimbrough both from NASA, and mission specialist Akihiko Hoshide from JAXA (left to right). NASA TV LIVE launch coverage . Photo...

Read more about NASA SpaceX Crew-2 Mission scheduled to launch

Photo of Yuri Gagarin signing autographs at a youth conference with Valentina Tereshkova, the first woman in space
60th Anniversary of Spaceflight

April 12, 2021

Sixty years ago today, the world was in awe as Russian Cosmonaut, Yuri Gagarin became the first human to break the bounds of the Earth and travel into outer space on board Vostok 1. Fascinated with flight at an early age, he became a pilot and then joined the Soviet...

Read more about 60th Anniversary of Spaceflight

Graphic from SkySafari app of the western sky from Boulder and Mars within Taurus
Mars & the Bull

April 6, 2021

Can you spot Mars in the west during twilight? The Red Planet is still within the horns of the bull and both are sinking lower in the spring sky. Photo credit: SkySafari

Read more about Mars & the Bull

Moon in Beehive Cluster graphics photo image from Stellarium
The Beehive and the Moon

March 23, 2021

The Moon is all a buzz in the Beehive Cluster tonight. Get out your binos and join the swarm! At only 600 LYs away, M44 is one of the closest star clusters to us and is full of 1,000+ young Suns spanning the area of 3 full Moons (1.5 degrees)...

Read more about The Beehive and the Moon

View of Earth from DSCOVR EPIC camera
Spring!

March 20, 2021

It’s FINALLY Spring! The Sun crossed the celestial equator early this morning at 3:37a.m. The Sun rises due east and and sets due west on the equinoxes, plus day and night are approximately equal in length. Get out there and enjoy your ride on spaceship Earth! Want to see real-time...

Read more about Spring!

Sirius graphic and Canis Major constellation from Stellarium
Scorching Sirius

March 16, 2021

Tonight’s forecast calls for a few flakes of snow & cloudy skies, but should it clear to the south, look for the brightest star in our Earthly skies - SIRIUS! From the Greek word scorching, Sirius is 8.6 LYs away (a mere 51 trillion miles) in the constellation of Canis...

Read more about Scorching Sirius

Screen grab of Saturn, Jupiter, Mercury and the Moon in Capricornus Photo Credit Stellarium
Saturn, Jupiter, Mercury and the Moon in Capricornus

March 9, 2021

Up before the Sun? Grab your binos and scan the eastern horizon early on Wednesday morning to spot Saturn, Jupiter, Mercury and the Moon all within the mythical seagoat Capricornus. Photo credit: Stellarium

Read more about Saturn, Jupiter, Mercury and the Moon in Capricornus

Constellation of Leo from Stellarium
Lion in the Grass

March 2, 2021

Have you spotted the Lion lounging on the eastern horizon? The beautiful stars of Algenubi, Rasalas, Adhafera, Algieba, and Regulus outline Leo’s head, mane and front paw, while Zosma and Chertan draw the back and hindleg, and Denebola completes the picture with a fur-tipped tail. If you have a telescope...

Read more about Lion in the Grass

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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.

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FISKE PLANETARIUM

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