How sources are used
These links provide factual background; they do not endorse this publication. Our exercises, explanatory examples and interface text are original. Nothing here is presented as a live update unless explicitly stated, and this edition contains no live feeds.
Canadian Space Agency — Getting started in astronomy
Checked 5 October 2026. Referenced for the factual background of the associated reading guide.
NASA — Moon phases
Checked 5 October 2026. Referenced for the factual background of the associated reading guide.
Canadian Space Agency — Tips and tricks
Checked 5 October 2026. Referenced for the factual background of the associated reading guide.
First Canadian Place — Official building website
Checked 5 October 2026. Referenced for the Canadian building reference only; not evidence of our office.
Office of the Privacy Commissioner of Canada — Privacy laws
Checked 5 October 2026. Referenced for privacy-law context; no compliance certification is claimed.
Photographic provenance
Photographs are packaged locally. Display crops and format conversions do not turn them into location records, staff photographs or evidence of a service. No AI-generated photographs are used.
deep-field.webp
NASA; Hubble eXtreme Deep Field, via scikit-image.
Licence: Public domain as documented by scikit-image. Converted to WebP; responsive layout may crop the display. Not AI-generated.