Join us this Wednesday, July 16, for an exciting evening of astronomy at the Allan I. Carswell Observatory! We are hosting an observatory tour where guests will have a chance to explore the inside of our incredible 1m and 60cm telescope domes.
Bonus: If the skies are clear, we’ll set up our 1m telescope for live observing!
Date: Wednesday, July 16, 2025
Time: 9:00 – 11:00 PM ET
Location: Petrie Science and Engineering Building, 3rd Floor
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-observatory-tour-july-16th--2025

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #Tour #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Tune in tonight, July 14, for a new episode of York Universe LIVE! Hosted by Paul Mackin and Professor Mary-Helen Armour, this week's episode highlights asteroid sample return missions and observing distant stars and galaxies.
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, July 14, 2025
Time: 9:00 – 10:00 PM ET
Location: www.youtube.com/@YorkUObservatory/live

#SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Happy Space Science Saturday! Did you know that today Saturn begins its retrograde motion? Normally, Saturn moves eastward against the background of stars, but during retrograde it appears to pivot and move westward through the constellations. This apparent backward motion isn’t because Saturn actually reverses its orbit, but rather because of Earth’s own motion around the Sun. As Earth passes Saturn in its orbit, our changing perspective makes Saturn appear to move backward in the night sky.


#Orbit #Retrograde #Saturn #SpaceExploration #Space #Astronomer #Astronomy #SpaceScienceSaturday #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO #Cosmos #LearnAstronomy #SpaceFacts

Tune in tonight, July 7, for a new episode of York Universe LIVE! Our hosts discuss fascinating astronomy history and current events, including the publication of Isaac Newton’s Principia and the life of physicist Hans Bethe.
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, July 7, 2025
Time: 9:00 – 10:00 PM ET
Where: www.youtube.com/@YorkUObservatory/live

#SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Allan I. Carswell Observatory is hosting an in-person sky-observing tour! The event will be on the Arboretum Lane Parking Garage just across from the York University Petrie Science and Engineering Building at 9:00 PM on July 2, 2025
Date: Wednesday, July 2, 2025
Time: 9:00 – 11:00 PM ET
Location: Arboretum Lane Parking
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-arboretum-in-person-event-july-2nd--2025
Tickets are free but required and the tour is weather dependent so please ensure that the event is still running the day of the event by checking our socials or website at yorku.ca/science/observatory

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Thanks to everyone who followed along with us, we had the first clear day on Sunday June 29th, 5-11pm
The Open Air Astro Fair event Is Done!!! A huge thanks to everyone who joined us for astronomy activities. All funds raised will go to observatory repairs and summer operations.
A photo and video gallery for the event will be posted to the observatory website in the next week. As a reminder if any of you would like to revisit the observatory we will have smaller Wednesday tour events for free all year long after sunset at the observatory (free tickets can be found on the website). https://www.yorku.ca/science/observatory/
Thank you all for your support!

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO

Tune in tonight, June 23, for a new episode of York Universe LIVE! Our hosts discuss fascinating astronomy history and current events, including the discovery of Pluto’s moons Nyx and Hydra!
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, June 23, 2025
Time: 9:00 – 10:00 PM ET
Where: www.youtube.com/@YorkUObservatory/live

#SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Happy Space Science Saturday!
The Moon and Venus will be in conjunction tonight, June 21, into tomorrow night, June 22, as they will share right ascension. This means the two bodies will appear close to each other in the sky, as seen in the image above.


#Venus #Moon #Conjunction #SpaceExploration #Space #Astronomer #Astronomy #SpaceScienceSaturday #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Who doesn't love space? It captures our imaginations and makes us wonder if we are truly alone.
Join us for a fair of astronomical proportions at York University with the Allan I Carswell Observatory and our event partners. A single ticket will get you entry to booths, activities, telescopes, and the Astronomy in Action Planetarium.
This exciting event is running as a FIRST CLEAR DAY event as it will be outdoors and under the open air between June 24 - July 4. The event will happen only once on the first clear day, and all ticket holders will see a go or no-go update (depending on the weather) both on the event website and via their registration email by 9am each day.
We are excited to welcome you to walk through the solar system, investigate sundials, and interact with both science and games in this event. All areas are suitable for ages 5 and up, but younger children should be accompanied by an adult.
For tickets and information see: https://www.yorku.ca/science/observatory/astrofair/

Curious about what makes Astro Fair so special? Check out our spotlight in YFile!
https://www.yorku.ca/yfile/2025/06/18/open-air-astro-fair-fosters-learning-local-support-for-york-u-observatory/

#AstroFair #AstronomyEvent #FamilyFun #ScienceFestival #YorkU #AllanICarswellObservatory #Stargazing #SolarViewing #Sunspots #Planetarium #HandsOnScience #ScienceOutreach #STEMEducation #TorontoEvents #ThingsToDoToronto #SpaceScience #AstronomyForEveryone #ObservatoryEvents #ClearSkies #TelescopeViews #ExploreTheUniverse #AstronomerLife #YorkUObservatory #AICO

Join us this Wednesday, June 18, for an exciting evening of astronomy at the Allan I. Carswell Observatory! We are hosting an observatory tour where guests will have a chance to explore the inside of our incredible 1m and 60cm telescope domes.
Bonus: If the skies are clear, we’ll set up our 1m telescope for live observing!
Date: Wednesday, June 18, 2025
Time: 9:00 – 11:00 PM ET
Location: Petrie Science and Engineering Building, 3rd Floor
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-observatory-tour-june-18th--2025

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #Tour #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Tune in tonight, June 16, for a new episode of York Universe LIVE! Our hosts discuss fascinating astronomy history and current events, including the discovery of Pluto’s moons Nix and Hydra!
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, June 16, 2025
Time: 9:00 – 10:00 PM ET
Where: www.youtube.com/@YorkUObservatory/live

#Moons #Hydra #Nix #Pluto #SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Allan I. Carswell Observatory is hosting an in-person sky-observing tour! The event will be on the Arboretum Lane Parking Garage just across from the York University Petrie Science and Engineering Building at 9:00 PM on June 11, 2025
Date: Wednesday, June 11, 2025
Time: 9:00 – 11:00 PM ET
Location: Arboretum Lane Parking
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-arboretum-in-person-event-june-11th--2025 atri
Tickets are free but required, and the tour is weather dependent so please ensure that the event is still running the day of by checking our socials or website at https://yorku.ca/science/observatory

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Tune in tonight, June 9, for a new episode of York Universe LIVE! Our hosts discuss fascinating astronomy history and current events, including the first man-made object to leave the solar system!
If weather permits, we’ll have Online Public Viewing where we show you live views from our 1m telescope!
Date: Monday, June 9, 2025
Time: 9:00 – 10:00 PM ET
Where: www.youtube.com/@YorkUObservatory/live

#SolarSystem #Pioneer10 #SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Allan I. Carswell Observatory is hosting an in-person sky-observing tour! The event will be on the Arboretum Lane Parking Garage just across from the York University Petrie Science and Engineering Building at 9:00 PM on June 4, 2025
Date: Wednesday, June 4, 2025
Time: 9:00 – 11:00 PM ET
Location: Arboretum Lane Parking
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-arboretum-in-person-event-june-4th--2025
Tickets are free but required, and the tour is weather dependent so please ensure that the event is still running the day of by checking our socials or website at https://yorku.ca/science/observatory

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Happy Space Science Saturday!
Tonight, Venus reaches its greatest western elongation, meaning it is at its furthest point from the Sun in the sky, about 46 degrees. This is an ideal time to observe the planet because it will be at its highest point above the horizon before sunrise. So, get out your telescopes and have a good time stargazing!


#Sun #GreatestWesternElongation #Venus #SpaceExploration #Space #Astronomer #Astronomy #SpaceScienceSaturday #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Allan I. Carswell Observatory is hosting an in-person sky-observing tour! The event will be on the Arboretum Lane Parking Garage just across from the York University Petrie Science and Engineering Building at 9:00 PM on May 28, 2025
Date: Wednesday, May 28, 2025
Time: 9:00 – 11:00 PM ET
Location: Arboretum Lane Parking
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-arboretum-in-person-event-may-28th--2025
Tickets are free but required and the tour is weather dependent so please ensure that the event is still running the day of the event by checking our socials or website at yorku.ca/science/observatory

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Happy Space Science Saturday!
The New Moon will be upon us May 27th so get your telescopes ready! This phase provides ideal conditions for observing faint objects in the night sky. During a New Moon, the Moon is positioned between the Sun and Earth, meaning very little sunlight is reflected off its surface, giving us darker skies for optimal stargazing.
Image Credit: space.com

#NewMoon #SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Allan I. Carswell Observatory is hosting an in-person sky-observing tour! The event will be on the Arboretum Lane Parking Garage just across from the York University Petrie Science and Engineering Building at 9:00 PM on May 21, 2025.

Tickets are free but required for entry and can be accessed through the following link:
Date: Wednesday, May 21, 2025
Time: 9:00 – 11:00 PM ET
Location: Arboretum Lane Parking
Get your free tickets here: https://www.zeffy.com/en-CA/ticketing/allan-i-carswell-observatory-tour-may-21th--2025

#Astronomy #Astronomer #Space #YorkU #Observatory #AllanICarswellObservatory #Stargazing #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #ClearSkies #FreeEvents #FamilyFriendly #ScienceOutreach #Tour #AICO

Join us for Doors Open Toronto!
Visitors to the observatory will have an opportunity to view our 1-metre and 60-centimetre telescopes, speak with astronomy students, learn what it means to be an astronomer, find out about the latest research and discoveries. There will be guided tours of the building, along with a special Observatory Treasure Hunt.
Smaller portable telescopes will be available for visitor use, weather permitting.

Who doesn't love space? It captures our imaginations and makes us wonder if we are truly alone. This is a great Doors Open option for young visitors and the young at heart.

Visitors should note that there are dim light conditions and stairs-only access (unfortunately no lifts or ramps are available) in the observatory and sturdy close-toed shoes are recommended.
Last admittance will be at 4:30 PM ET.
To learn more, check out the observatory website: https://www.yorku.ca/science/observatory/

#FreeEvents #ScienceOutreach #HST #DoorsOpen #DoorsOpenToronto #SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO

Happy Space Science Saturday!
This image shows the Heart Nebula, also known as IC 1805. It gets its name due to its shape resembling the human heart, as well as the red light emissions it gives off due to the hydrogen gas within the nebula.

#Hydrogen #Nebula #HeartNebula #IC1805 #SpaceExploration #Space #Astronomer #Astronomy #Radio #Show #Podcast #YorkU #Observatory #AllanICarswellObservatory #Stargazing #YorkUniverse #Telescope #Planets #Stars #Science #Physics #Toronto #YorkUObservatory #AICO