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Astronomy

Looking for an astronomy fix? We have you covered.

International Observe the Moon Night graphic
International Observe the Moon Night

Oct. 14, 2021

Celebrate NASA’s International Observe the Moon Night Oct. 16th! We’ll be closed due to the football game (Go BUFFS!), but the Longmont Astronomical Society is partnering with Boulder County Open Space to host an event on Oct. 15th. Check out the event! Need a Moon map? Check this one out...

Read more about International Observe the Moon Night

Photo of a mock up of Sputnik 1
Dawn of the Space Age

Oct. 4, 2021

The Soviet Union’s Sputnik spacecraft launched 64 years ago today (1957). History changed forever as this large-pumpkin sized craft orbited the Earth. This one event sparked the beginning of the space race between the U.S. and the U.S.S.R. NASA wasn’t established yet, but this singular event spurred Congress to take...

Read more about Dawn of the Space Age

Photo of the fall colors aspen and evergreen trees in the mountains
Autumnal Equinox

Sept. 22, 2021

Brisk mornings, warm days, cool nights - feels like fall! Today is the autumnal equinox and the Sun is directly over Earth's equator, making day and night approximately equal in length (equinox comes from the Latin aequus (equal) and nox (night).

Read more about Autumnal Equinox

Graphic showing an observer looking through the atmosphere when the Moon is on the horizon versus the zenith
Harvest Moon

Sept. 20, 2021

Full Moon tonight! Watch the Sun set in the west as the Harvest Moon rises in the east. Notice the orange color as the Moon rises? Check it out a few hours later when the Moon is higher in the sky — the orange/sepia filter has faded. This color shift...

Read more about Harvest Moon

Graphic of fruit representing the inner planets of the solar system
Boulder Farmer's Market

Sept. 10, 2021

Got a burning question about astronomy and space? Stop by the Boulder Planetary Scientist booth Saturday morning at the Boulder Farmer’s Market . Our head space guru, Dr. John Keller will be there to answer your questions. Can you stump him?

Read more about Boulder Farmer's Market

Western Sky from Boulder September 9, 2021 photo Credit Stellarium
Sunsets with the Moon & Venus

Sept. 9, 2021

Take a moment and give yourself a gift of watching the sunset over the next few evenings. The waxing crescent Moon joins Venus in the western sky and then meets up with Antares on Sunday. Check out Stellarium to see what your sky looks like! (Free on mobile or web.)...

Read more about Sunsets with the Moon & Venus

Artist illustration of planet locations in their orbits around the Sun
Gas Planets at Opposition

Aug. 19, 2021

Jupiter joins Saturn tonight as both planets officially reach opposition this month. The gas giants are visible all night long, because they’re directly opposite of the Sun in our sky. Spot Jupiter in Aquarius and Saturn in Capricornus only about 20 degrees apart.

Read more about Gas Planets at Opposition

Perseid Meteor shower video still with silhouette of trees in the foreground
Perseid Meteor Shower

Aug. 6, 2021

The Perseid meteor shower peaks on the night of Wednesday, August 11 through dawn on Thursday morning. Every August this meteor shower dazzles us with a reliable display of celestial fireworks. Even in areas suffering from light pollution, the brightest Perseids will still be visible. Check out this article from...

Read more about Perseid Meteor Shower

Screen captures of various astronomy forecasting tools including light pollution map, lunar phase, weather forecast and smoke map for the United States
Astronomy Observation Forecast Tools

Aug. 4, 2021

New Moon weekend, Sunday to be exact! Great time to grab your telescope and observe summer’s faint fuzzies in Scorpius and Sagittarius. The conditions this summer are challenging with increasing light pollution, rain, transparency, seeing conditions and smoke from wildfires. Fiskers rely on Clear Sky Charts and Astrospheric to plan...

Read more about Astronomy Observation Forecast Tools

Photos of Jupiter, Moon and Saturn from NASA not to scale
The Thunder Moon

July 23, 2021

Night owls watch the Moon play with Jupiter and Saturn this weekend! Tonight, the nearly full Moon rises slightly before the giant planets. Saturday, the full Moon, known in July as the Thunder, Hay, or Buck Moon will be placed between Saturn (to the right) and Jupiter (to the left)...

Read more about The Thunder Moon

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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

  303.492.5002  

  fiske@colorado.edu  

  2414 Regent Drive, Boulder, CO 80309

  Find Fiske and parking info: CU Interactive Map

 

 

 

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