Earlier this week the Aurora Borealis painted the sky with beautiful shades of green and red. The Earth was in the path of a powerful Coronal Mass Ejection and these high energy particles lit up the oxygen in our upper atmosphere. What an awesome natural display! Photos from south Calgary.

There's nothing quite like being able to look up at the Aurora curtain #aurora

"Our findings show that ALAN disrupts the fundamental energetic constraints on ecosystem metabolism, warranting the inclusion of light pollution in global change and carbon–climate feedback assessments." Johnston, Kim, & Harris. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...

Aurora before bedtime on a work night are the best Aurora 😜

Light pollution: The silent threat to the planet that's easily solved https://phys.org/news/2025-11-pollution-silent-threat-planet-easily.html

Not to be outdone by the reds of the aurora last night, this morning’s #sunrise is putting on a good show.

Quick little time lapse of the aurora this evening!!!

#Timelapse of lots of red #aurora looking east from northern Vulcan County. #astronomy

#Timelapse of lots of red #aurora looking west from northern Vulcan County. Normally, this view would be dominated by the distant light dome from the City of Calgary’s #lightpollution. #astronomy

A few more photos from tonight’s incredible #aurora. I’m fascinated by the amount of red light tonight. This is generated by oxygen molecules being excited by light plasma at least 600 km above the Earth. The green is also oxygen molecules, but much lower (100-250km). Definitely a great night.

I’ve seen this shared several times with the header and footer not visible, so you can’t see the artists’s name. Credit: Leo the Alien — alienyrox on redbubble and other platforms.

I haven't yelled that many (overwhelmingly excited) swear words at the sky for a long time. WWOOOOOWWWWW. Reddest auroras I've ever seen!! Usually it takes a long time exposure/CCD camera to see red at all. This is BRIGHT!! You can actually see easily outside […] [Original post on mastodon.social]

#Timelapse of lots of red #aurora looking west from northern Vulcan County. Normally, this view would be dominated by the distant light dome from the City of Calgary’s #lightpollution. #astronomy

#Timelapse of lots of red #aurora looking east from northern Vulcan County. #astronomy

Interstellar Comet 3I/ATLAS is visible through telescopes from the Northern Hemisphere. Low to the east in the early morning sky, close to Spica (Alpha Virginis). Latest info. 🔭 🧪 theskylive.com/c2025n1-info

That fuzzy dot at the center of the image is the interstellar comet 3I/ATLAS as captured from my backyard this morning. 🔭

They shall grow not old, as we that are left grow old: Age shall not weary them, nor the years condemn. At the going down of the sun And in the morning We shall remember them.

A geomagnetic storm will hit Earth Tuesday evening with a decent viewing of the auroras including in parts of Canada. https://ow.ly/Vsnw50XpLu4

108 is a barred spiral galaxy located about 46 Mly away in the constellation of Ursa Major. It has been observed to have over 200 globular clusters in orbit about it. #astronomy

🦇 ICYMI We’ve updated our Bat Ambassador Guide for teachers, interpreters, and anyone sharing bat knowledge. It’s free and packed with outreach tips and Alberta bat info. Link in comments!

Oh baby! Sunset was crazy tonight from the balcony. #Calgary

In between observing comets this morning I did manage to catch the Moon in its waning gibbous phase. 🔭

📢Survey on perceptions of noise & light pollution + how we can reduce it to benefit wildlife. How does it effect you? What would you change? What measures are effective? PLAN-B Horizon project 🔗 app.onlinesurveys.jisc.ac.uk/s/salford/pl... #LightPollution #NoisePollution #Biodiversity #Europe

www.theguardian.com/environment/... (h/t Dr. Raul C Lima) @raulclima.bsky.social

Two views of the rising waning Moon from November 6, 2025, the day after the Full Moon. It's here rising into the blue twilight amid some clouds and over the prairie rangeland near home in southern Alberta.

Saturn is the 6th planet in our solar system, famed for it's spectacular ring system. As the rings are inclined to the plane of Saturn's orbit, we see them at different angles through the years. Here we see the change from 2019 (L) to 2025 (R). #astronomy

Spectacular aurora displays were seen across the Prairies and northern U.S. this week, including right over Winnipeg, where the night sky lit up in waves of green, purple and pink. https://ow.ly/84TU50Xo5vS

A G3 (strong) geomagnetic storm watch has been issued for late on Thursday, November 6 through Friday, November 7. Due to the uncertainties in the exact timing of when the CME arrives, it may impact anytime between Thursday night and Friday morning. https://ow.ly/p5A050Xo0nV

This JSWT image shows Jupiter's Ring. Also you can see Jupiter's Great Red Spot (GRS), Jupiter's large moon Europa (the diffraction spikes) on the left, and Europa's shadow (next to the GRS). The seemingly separated cloud layer on Jupiter's right limb are not yet well understood. #Astronomy #Jupiter

Some more photos of the supermoon 🌕 Captured this morning at 5:15 am @bskyphotos.bsky.social @calgaryrasc.bsky.social #photography #lunar #moon #nature #moonlight #sky #nightsky #nightphotography #astrology #moonphotography #space #astronomy #fullmoon #supermoon #astrophotography

Tonight’s supermoon 🌕 Captured with my Panasonic Lumix DMC-TZ81 @bskyphotos.bsky.social @calgaryrasc.bsky.social @science.esa.int #photography #lunar #moon #nature #moonlight #sky #nightsky #nightphotography #astrology #moonphotography #space #astronomy #fullmoon #supermoon #astrophotography

The Trumpeter Swans have arrived on the open waters of the Bow River #AB #YYC. This group of seven was made up of five first year cygnets - a wonderfully productive summer if this is an intact family!

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M41 is an open cluster located about 2400 ly away in the constellation of Canis Major. Open clusters are great natural laboratories for stellar evolution. Since the stars were formed roughly at the same time, we can see how different stars evolve over time. #astronomy

Tonight’s perigee #FullMoon as seen from Chestermere AB. #astronomy

By tracking the telescope at the sidereal rate (with the Earth's rotation) and taking a photo every minute as the Moon moved through the following image was made staking the images. This was during a lunar eclipse. The resulting photo shows the Earth's shadow. #astronomy

M27, the Dumbbell Nebula is a planetary nebula located about 1250 ly away in the constellation of Vulpecula. A type of dying star, M27 was the first planetary nebula discovered, in 1764, by Charles Messier; though what it was wasn't known at that time. #astronomy

M60 (bright galaxy centre) is an elliptical galaxy located about 56.7 Mly away in the constellation of Virgo. It is one of the brightest galaxy in the Virgo cluster. The smaller spiral galaxy beside it is NGC 4647. The pair are listed as Arp 116 in the Atlas of Peculiar Galaxies. #astronomy

Monday was another day when many flocks of migratory birds flew by the wind farm south of East Coulee. #abstorm #birds #ornithology

🦇News of the "probiotic" we are using to treat bats against white-nose syndrome makes the National News this week - on CBC's "Your World Tonight" - the story is introduced in the first minute and then highlighted between 22:25-25:43 www.cbc.ca/listen/live-...

The rayed #crater Tycho dominates the view of tonight’s waxing gibbous #Moon. #astronomy

The #waxing gibbous #Moon and the Belt of Venus, the shadow of the Earth on the atmosphere. The ‘belt’ is the grey band with the pink upper margin. #astronomy @davemason.bsky.social

Spot the bright Aristarchus crater on the left limb, at around 9 o’clock.

The rayed #crater Tycho dominates the view of tonight’s waxing gibbous #Moon. #astronomy

The #waxing gibbous #Moon and the Belt of Venus, the shadow of the Earth on the atmosphere. The ‘belt’ is the grey band with the pink upper margin. #astronomy @davemason.bsky.social

I haven't done smartphone astro in a bit because I got an astrocam recently. However, I'm doing a smartphone #astrophotography talk on Friday. Toronto area folks, join us! It's free/open to the public (w/ paid parking). Here's the info: mississauga.rasc.ca/event/potpou... Attached are my own images.

Tonight’s Waxing Gibbous Moon from the balcony. #Astronomy

🌟 The November 2025 edition of The Evening Sky Map is ready for download at skymaps.com/tesm/. The PDF features a Sky Calendar and easy-to-use sky maps for the northern and southern hemispheres, as well as equatorial regions. Please share, and enjoy exploring the Universe! 🔭 #stargazing #space

Isaac Roberts captured the Great Andromeda “Nebula” in 1888. A 105 minute exposure of Andromeda, using a 20 inch "silver on glass" reflector (and 7" guide scope) mounted on a custom clockwork equatorial mount. Pictured in his observatory and on display at the Science Museum in London #Astronomy