RASC Calgary Centre
@calgaryrasc.bsky.social
Explore the sky, space and astronomy with the Calgary Centre of The Royal Astronomical Society of Canada!
Email us: [email protected]
calgary.rasc.ca
Email us: [email protected]
calgary.rasc.ca
Reposted by RASC Calgary Centre
If you want to know more about light pollution see @sarabpritchard.bsky.social new book!
Industrialization in Michigan’s Upper Peninsula has some residents pushing for protection of the region’s dark skies.
In Michigan’s Upper Peninsula, Locals Fight for ‘The Right to Night’
Industrialization in Michigan’s Upper Peninsula has some residents pushing for protection of the region’s celestial splendor.
nyti.ms
November 25, 2025 at 11:37 AM
If you want to know more about light pollution see @sarabpritchard.bsky.social new book!
Reposted by RASC Calgary Centre
We're getting so close! This thread and the link can help you decide if you want to participate (the answer is yes) It's an all skill levels, unthemed, relaxed, fun & easy to spend the dark days of winter.
Artists & Art lovers!
Time to get geared up for the biggest art event of the year on Bluesky!
Last year we had close to 1500 artists from 25 countries posting original work daily from December 1-24
Time to get geared up for the biggest art event of the year on Bluesky!
Last year we had close to 1500 artists from 25 countries posting original work daily from December 1-24
#ArtAdventCalendar
In its 11th year, #artadventcalendar participants post an original piece of art from Dec 1-24. Paintings, drawings, sculpture, textiles, beading, photography. If it’s art and it beautifies th…
earthskyart.ca
November 25, 2025 at 4:25 PM
We're getting so close! This thread and the link can help you decide if you want to participate (the answer is yes) It's an all skill levels, unthemed, relaxed, fun & easy to spend the dark days of winter.
Reposted by RASC Calgary Centre
Still too little, but pointing in the correct direction: the Restoration of Natural Darkness
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
MOTION 046
iucncongress2025.org
November 25, 2025 at 5:44 PM
Still too little, but pointing in the correct direction: the Restoration of Natural Darkness
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
Reposted by RASC Calgary Centre
Good article! I would add that NOAA has a predictor website. Tomorrow looks good:
www.swpc.noaa.gov/communities/...
Scroll down to the 30 minute predictions and refresh often. Things can change quickly.
www.swpc.noaa.gov/communities/...
Scroll down to the 30 minute predictions and refresh often. Things can change quickly.
November 25, 2025 at 2:37 AM
Good article! I would add that NOAA has a predictor website. Tomorrow looks good:
www.swpc.noaa.gov/communities/...
Scroll down to the 30 minute predictions and refresh often. Things can change quickly.
www.swpc.noaa.gov/communities/...
Scroll down to the 30 minute predictions and refresh often. Things can change quickly.
Reposted by RASC Calgary Centre
M28 is a globular cluster located about 18 kly away in the constellation of Sagittarius.
As with most globular clusters there appears to be no active star formation as the stars in the cluster are all cool, older red stars with no young blue stars. #astronomy
As with most globular clusters there appears to be no active star formation as the stars in the cluster are all cool, older red stars with no young blue stars. #astronomy
November 25, 2025 at 1:25 AM
M28 is a globular cluster located about 18 kly away in the constellation of Sagittarius.
As with most globular clusters there appears to be no active star formation as the stars in the cluster are all cool, older red stars with no young blue stars. #astronomy
As with most globular clusters there appears to be no active star formation as the stars in the cluster are all cool, older red stars with no young blue stars. #astronomy
How and where to go out to view the #aurora in #Alberta. #astronomy www.cochraneeagle.ca/cool-winter-...
ICYMI: Here’s Your Go-To Guide To Spotting The Northern Lights This Winter
COOL WINTER GUIDE: You need to experience this colourful rainbow of light at least once in your lifetime. Follow along as we explore the wonders of Alberta’s dark sky paradise.
www.cochraneeagle.ca
November 25, 2025 at 12:22 AM
How and where to go out to view the #aurora in #Alberta. #astronomy www.cochraneeagle.ca/cool-winter-...
Our Observers’ Group meeting this evening at our club observatory was sparsely attended due to overwhelming clouds. A few others joined in via Zoom. 🔭 #astronomy
November 23, 2025 at 5:20 AM
Our Observers’ Group meeting this evening at our club observatory was sparsely attended due to overwhelming clouds. A few others joined in via Zoom. 🔭 #astronomy
Reposted by RASC Calgary Centre
🦇Here’s the truth: Alberta’s bats are working night shift every single day to keep our forests and crops healthy.
If they disappeared, we’d feel it fast - more pests, more damage, more pesticides.
Small animals. Big impact.
If they disappeared, we’d feel it fast - more pests, more damage, more pesticides.
Small animals. Big impact.
November 23, 2025 at 12:16 AM
🦇Here’s the truth: Alberta’s bats are working night shift every single day to keep our forests and crops healthy.
If they disappeared, we’d feel it fast - more pests, more damage, more pesticides.
Small animals. Big impact.
If they disappeared, we’d feel it fast - more pests, more damage, more pesticides.
Small animals. Big impact.
Reposted by RASC Calgary Centre
Has anyone observed STEVE from Alaska? This is just a soft ask for now, but I am compiling a list of events to study further, and if you have a photo of STEVE from Alaska (specifically near Fairbanks), feel free to comment it below with a date, time, and location!
Photo below by Neil Zeller/NASA
Photo below by Neil Zeller/NASA
November 22, 2025 at 10:52 PM
Has anyone observed STEVE from Alaska? This is just a soft ask for now, but I am compiling a list of events to study further, and if you have a photo of STEVE from Alaska (specifically near Fairbanks), feel free to comment it below with a date, time, and location!
Photo below by Neil Zeller/NASA
Photo below by Neil Zeller/NASA
Reposted by RASC Calgary Centre
The Peekskill meteorite car belonged to my mother’s housekeeper.
She called me that day and said “A meteorite crashed through my housekeeper’s car”
I thought it was just a bid for attention because she was bored and I was the primary caregiver.
She called me that day and said “A meteorite crashed through my housekeeper’s car”
I thought it was just a bid for attention because she was bored and I was the primary caregiver.
November 22, 2025 at 1:26 PM
The Peekskill meteorite car belonged to my mother’s housekeeper.
She called me that day and said “A meteorite crashed through my housekeeper’s car”
I thought it was just a bid for attention because she was bored and I was the primary caregiver.
She called me that day and said “A meteorite crashed through my housekeeper’s car”
I thought it was just a bid for attention because she was bored and I was the primary caregiver.
Reposted by RASC Calgary Centre
Learn more about one of the projects we participate in at the Weaselhead: Calgary Connect - Wildlife Monitoring.
@calgaryrasc.bsky.social @miistakis.bsky.social
www.youtube.com/watch?v=1jC6...
@calgaryrasc.bsky.social @miistakis.bsky.social
www.youtube.com/watch?v=1jC6...
Calgary Connect Wildlife Monitoring in the Weaselhead
YouTube video by Weaselhead Preservation Society
www.youtube.com
November 22, 2025 at 4:43 PM
Learn more about one of the projects we participate in at the Weaselhead: Calgary Connect - Wildlife Monitoring.
@calgaryrasc.bsky.social @miistakis.bsky.social
www.youtube.com/watch?v=1jC6...
@calgaryrasc.bsky.social @miistakis.bsky.social
www.youtube.com/watch?v=1jC6...
Things that make me happy :-) 😀
In 1982, a physics joke gone wrong sparked the invention of the emoticon
https://arstechnica.com/gadgets/2025/11/in-1982-a-physics-joke-gone-wrong-sparked-the-invention-of-the-emoticon/
https://arstechnica.com/gadgets/2025/11/in-1982-a-physics-joke-gone-wrong-sparked-the-invention-of-the-emoticon/
arstechnica.com
November 22, 2025 at 5:14 AM
Things that make me happy :-) 😀
Reposted by RASC Calgary Centre
M78 is a reflection nebula located about 1350 ly away in the constellation of Orion.
We see reflection nebulae because the light from a nearby star is bouncing off the gas and dust of the nebula. #astronomy
We see reflection nebulae because the light from a nearby star is bouncing off the gas and dust of the nebula. #astronomy
November 20, 2025 at 10:54 PM
M78 is a reflection nebula located about 1350 ly away in the constellation of Orion.
We see reflection nebulae because the light from a nearby star is bouncing off the gas and dust of the nebula. #astronomy
We see reflection nebulae because the light from a nearby star is bouncing off the gas and dust of the nebula. #astronomy
Reposted by RASC Calgary Centre
Take three minutes to look at pretty birds, explore radar data, and see how we connect the structure of skies to MacArthur's ideas of niche partitioning. 📡🐦☁️🎧
November 20, 2025 at 6:28 PM
Take three minutes to look at pretty birds, explore radar data, and see how we connect the structure of skies to MacArthur's ideas of niche partitioning. 📡🐦☁️🎧
Whether you're a newcomer to Edmonton, or an oldtimer, today we hope to shed a little light on our darkest season with a little something called: Edmonton's Winters - the Good, the Bad, and the Data (Part 1).
edmontonweathernerdery.blogspot.com/2025/11/edmo...
#yegwx #yeg
edmontonweathernerdery.blogspot.com/2025/11/edmo...
#yegwx #yeg
Edmonton's Winters - the Good, the Bad, and the Data (Part 1)
Weather history for Edmonton Alberta, from a year-round active-commuter. Trends and records for the northernmost city of 1M people in North America.
edmontonweathernerdery.blogspot.com
November 20, 2025 at 3:49 AM
Reposted by RASC Calgary Centre
If you missed our AGM you can watch the Bat presentation given by @albertabats.bsky.social here:
#yyc #alberta #bats
www.youtube.com/watch?v=dvKR...
#yyc #alberta #bats
www.youtube.com/watch?v=dvKR...
From Ecology to Emerging Threats: Understanding How to Protect Alberta’s #Bats
YouTube video by Weaselhead Preservation Society
www.youtube.com
November 20, 2025 at 12:21 AM
If you missed our AGM you can watch the Bat presentation given by @albertabats.bsky.social here:
#yyc #alberta #bats
www.youtube.com/watch?v=dvKR...
#yyc #alberta #bats
www.youtube.com/watch?v=dvKR...
The rise of the Belt of Venus, the shadow of the Earth on the atmosphere, this evening. #atoptics #atmosphericoptics
November 20, 2025 at 12:37 AM
The rise of the Belt of Venus, the shadow of the Earth on the atmosphere, this evening. #atoptics #atmosphericoptics
Reposted by RASC Calgary Centre
M104 is a spiral galaxy located about 9.5 Mly away in the constellation of Virgo.
M104 is known for its prominent dust lane, visible across the galaxy image. We can see this as the galaxy is nearly edge-on to our view. #astronomy
M104 is known for its prominent dust lane, visible across the galaxy image. We can see this as the galaxy is nearly edge-on to our view. #astronomy
November 19, 2025 at 1:35 AM
M104 is a spiral galaxy located about 9.5 Mly away in the constellation of Virgo.
M104 is known for its prominent dust lane, visible across the galaxy image. We can see this as the galaxy is nearly edge-on to our view. #astronomy
M104 is known for its prominent dust lane, visible across the galaxy image. We can see this as the galaxy is nearly edge-on to our view. #astronomy
Reposted by RASC Calgary Centre
Well, you'd have to wait a while for delivery, but you can preorder my book at 40% off with free domestic shipping with promo code WINTER25! #TransformingNight 🌃🌌💡
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
uwapress.uw.edu/book/9780295...
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
uwapress.uw.edu/book/9780295...
November 18, 2025 at 6:13 PM
Well, you'd have to wait a while for delivery, but you can preorder my book at 40% off with free domestic shipping with promo code WINTER25! #TransformingNight 🌃🌌💡
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
uwapress.uw.edu/book/9780295...
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
uwapress.uw.edu/book/9780295...
Reposted by RASC Calgary Centre
Well my site is back online after cloudflare's little fall down.
Perfect time to take advantage of my 50% off paper prints sale.
Sorry. No US orders.
earthskyart.ca/product-cate...
Perfect time to take advantage of my 50% off paper prints sale.
Sorry. No US orders.
earthskyart.ca/product-cate...
November 18, 2025 at 3:44 PM
Well my site is back online after cloudflare's little fall down.
Perfect time to take advantage of my 50% off paper prints sale.
Sorry. No US orders.
earthskyart.ca/product-cate...
Perfect time to take advantage of my 50% off paper prints sale.
Sorry. No US orders.
earthskyart.ca/product-cate...
Sara of the Weaselhead Glenmore Preservation Society speaking at the AGM about efforts to get the Park designated as a RASC Nocturnal Sanctuary. #lightpollution
November 18, 2025 at 4:17 AM
Sara of the Weaselhead Glenmore Preservation Society speaking at the AGM about efforts to get the Park designated as a RASC Nocturnal Sanctuary. #lightpollution
Susan Holroyd of @albertabats.bsky.social addressing the AGM of the Weaselhead Glenmore Preservation Society
November 18, 2025 at 3:19 AM
Susan Holroyd of @albertabats.bsky.social addressing the AGM of the Weaselhead Glenmore Preservation Society
🔭
My 2026 Amazing Sky Calendar is out and available for downloading at my website.
It's a FREE (!) PDF, suitable for local printing. It has lots of sky events listed in the monthly pages and 14 of my favourite astrophotos from 2025.
www.amazingsky.com/Books
It's a FREE (!) PDF, suitable for local printing. It has lots of sky events listed in the monthly pages and 14 of my favourite astrophotos from 2025.
www.amazingsky.com/Books
November 17, 2025 at 7:56 PM
🔭
Reposted by RASC Calgary Centre
Here are two 360º all-sky panoramas of the Great Red Aurora of November 11, 2025.
Both are multi-segment panoramas, not single shots, taking about a minute each to shoot, so the image is not a snapshot of the sky at one instant.
Details in the Alt Text.
Both are multi-segment panoramas, not single shots, taking about a minute each to shoot, so the image is not a snapshot of the sky at one instant.
Details in the Alt Text.
November 15, 2025 at 8:05 PM
Here are two 360º all-sky panoramas of the Great Red Aurora of November 11, 2025.
Both are multi-segment panoramas, not single shots, taking about a minute each to shoot, so the image is not a snapshot of the sky at one instant.
Details in the Alt Text.
Both are multi-segment panoramas, not single shots, taking about a minute each to shoot, so the image is not a snapshot of the sky at one instant.
Details in the Alt Text.
Reposted by RASC Calgary Centre
Plains Bison are long gone from most of the 🇨🇦 grasslands - but their past-presence remains. Glacial erratic scratching rocks and grown-over wallows of sign of their past supremacy. #mammals
November 15, 2025 at 8:13 PM
Plains Bison are long gone from most of the 🇨🇦 grasslands - but their past-presence remains. Glacial erratic scratching rocks and grown-over wallows of sign of their past supremacy. #mammals