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Astronomy

Looking for an astronomy fix? We have you covered.

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

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

Graphic of the constellation of Taurus with open clusters from Stellarium program
Dazzling Open Clusters

Feb. 23, 2021

Grab your binos and take some time to unwind with the dazzling celestial clusters in Taurus. The Pleiades are high in the eastern sky with the Hyades directly below admist the eyes of the bull. These two clusters have been admired since antiquity. While ever-changing and always in motion, we...

Read more about Dazzling Open Clusters

Artist illustration of Mars Rover mast head
Perseverance Rover Landing

Feb. 16, 2021

NASA’s Mars Perseverance Rover is just 2 days from touching down on the Red Planet. The spacecraft launched from Earth on July 30 and has been racing to Mars at almost 50,000mph. Will it find signs of ancient life? Can it collect samples of rock for a future sample return...

Read more about Perseverance Rover Landing

The Winter Hexagon graphic from Stellarium
The Sparkling Winter Sky

Feb. 9, 2021

Step outside after dinner and stand in wonder of the winter sky. You’ll be treated to magnificent display of very bright stars (1st magnitude or brighter) --- more than during any other season. Most are in the winter hexagon visible in the SE after dark. Find more info about this...

Read more about The Sparkling Winter Sky

Photo of a ground hog standing up in green grass
Groundhog Day

Feb. 2, 2021

Ever feel like Bill Murray in Groundhog Day? Whether Punxsutawney Phil saw his shadow or not, the holiday has roots in ancient astronomy. Feb. 2nd is a cross-quarter day, meaning it's half way between the winter solstice and the spring equinox. So, find time to celebrate the loops of time...

Read more about Groundhog Day

Screen shot from video of ocean from ISS
Down to Earth: The Astronaut’s Perspective

Jan. 26, 2021

Do you need some cosmic perspective? We certainly do. Our social media team came across this NASA piece - Down to Earth: The Astronaut’s Perspective - and wanted to share it with you. It's a good vibe on this snowy afternoon.

Read more about Down to Earth: The Astronaut’s Perspective

NASA - Astronaut Tracy Caldwell Dyson in the Cupola onboard the ISS
What's a year?

Jan. 1, 2021

2020 is in our rear view (thank goodness!) and the New Year has just begun, but what is a year anyway? A year is the time it takes our planet to make one orbit around the Sun - about 365 1/4 days. The distance our planet covers as it travels...

Read more about What's a year?

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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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