The Horsehead Nebula is an example of a dark nebula. We "see" the horse's head not because it gives off light, but because it blocks the light from the red emission nebula and stars behind it.

GW Orionis: A Star System with Titled Rings

Animation Illustration Credit: ESO, U. Exeter, S. Kraus et al., L. Calçada #APoD

Messier 101 is an example of what is known as a Grand Design Spiral galaxy. It has well defined spiral arms and no bar.

The spiral galaxy M63 in visible light is seen to be a what is known as a flocculent galaxy. That is a spiral galaxy that appears to not have well defined spiral arms.

Today the Sun's apparent motion caused it to cross the celestial equator heading south, this is the autumnal equinox.

M102 was considered a lost Messier object for many years. Modern research into Messier's writings seem to suggest that it is the same object as NGC 5866 (shown) and most modern Messier Catalogs show this.

The featured speakerNicole Mortillaro is now speaking on how the Sky is for Everyone:

Currently speaking Dr. Jeroen Stil on how we see through the dust in our Galaxy.

Free astronomy talks today at 1 pm Mountain time! Talks on Planetary Nebulae (Jason Nishiyama), Peering into our Galaxy (Dr. Jeroen Stil), and The Sky is for Everyone (Nicole Mortillaro). Also immediately after the talks a virtual tour of the Rothney Astrophysical Observatory.

Note the link will work for today's talks. The virtual observing has been moved to another weekend due to the Mordor-like conditions over the observatory.

M65, M66, and NGC 3628 are three galaxies that make up the Leo triplet, a small group of galaxies found in the constellation Leo. They are a popular target for amateur astronomers.

M95 is a barred spiral galaxy in the constellation Leo. It is called a barred spiral due to the bar of stars that is visible through the core. Many spiral galaxies, including our own, are barred.

Gravel Ejected from Asteroid Bennu

Image Credit: NASA's GSFC, U. Arizona, OSIRIS-REx Lockheed Martin #APoD

Some planetary nebula contain linear features within the nebula called filaments. We're not sure why these form. (Hubble image of PN IC 418)

Messier 81 is a spiral galaxy located in Ursa Major. M81 is about 12 million light years from Earth.

Dr. Jeroen Stil, astrophysicist with the University of Calgary, will discuss how we peer through the dust in our Galaxy in his talk Secrets of the Hidden Milky Way

Our featured speaker Nicole Mortillaro, Editor of the Journal of the Royal Astronomical Society of Canada and science reporter at the CBC, will talk on The Stars Belong to Everyone.

Talks begin at 1 p.m. on Saturday the 19th of September 2020 and are free! The URL to access the talks is

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