The New CAAO

What's New

New Partners and Sponsors


We would like to express our sincere appreciation to Perimeter Institute for their generous support. Your support is essential to help us bringing astronomy and astrophysics education to more students across Canada.

IAO 2022, Italy


The IAO officials have just informed us that this year’s IAO will be held in Matera, Italy around mid-October. The specific date of the competition and the registration deadline have yet to be announced.


The senior group of the IAO team will be selected from the IOAA Qualifying Exam. We will announce more details on a junior group selection exam soon.

2022 Team Canada for the IOAA and IAO




Main Team

- Daniel Yang

- Hongyi Huang

- Simon Wu

- Tian Pu

- Zander Li


Guest Team

- Connor Wong

- Olivia Khoroshilov

- Shokoofa Dehghani Mohammadabadi

- Nicholas Wu

- Yuehan Hu





Beta Group (Senior Team)

- William Deng

- Emma Yao


*The IAO Alpha Group (Junior Team) has yet to be selected. The selected participants’ names will be posted once available.

Spiral Galaxy NGC 2841

A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in the northern constellation of Ursa Major. This deep view of the gorgeous island universe was captured during 32 clear nights in November, December 2021 and January 2022. It shows off a striking yellow nucleus, galactic disk, and faint outer regions. Dust lanes, small star-forming regions, and young star clusters are embedded in the patchy, tightly wound spiral arms. In contrast, many other spirals exhibit grand, sweeping arms with large star-forming regions. NGC 2841 has a diameter of over 150,000 light-years, even larger than our own Milky Way. X-ray images suggest that resulting winds and stellar explosions create plumes of hot gas extending into a halo around NGC 2841. via NASA

Dueling Bands of the Night

What are these two bands in the sky? The more commonly seen band is the one on the right and is the central band of our Milky Way galaxy. Our Sun orbits in the disk of this spiral galaxy, so that from inside, this disk appears as a band of comparable brightness all the way around the sky. The Milky Way band can also be seen all year -- if out away from city lights. The less commonly seem band, on the left, is zodiacal light -- sunlight reflected from dust orbiting the Sun in our Solar System. Zodiacal light is brightest near the Sun and so is best seen just before sunrise or just after sunset. On some evenings in the north, particularly during the months of March and April, this ribbon of zodiacal light can appear quite prominent after sunset. It was determined only this century that zodiacal dust was mostly expelled by comets that have passed near Jupiter. Only on certain times of the year will the two bands be seen side by side, in parts of the sky, like this. The featured image, including the Andromeda galaxy and a meteor, was captured in late January over a frozen lake in Kanding, Sichuan, China. via NASA