edmontonrasc.com的 10 大竞争对手

skynews.ca

skynews, the best of canadian astronomy & stargazing | space, the night sky, planets, stars, astrophotography, astronauts, deep space, auroras, & observing tips

rasc.ca

Light Pollution Abatement at the Royal Astronomical Society of Canada Light pollution makes it harder to see the stars, but it also has long-term negative impacts on human health, heritage, and the environment. The RASC recognizes that natural dark skies are an important ecological and cultural resource, and has a dedicated team who promote awareness of the impacts of artificial light at night and lead efforts in light pollution abatement across Canada. To contact the Light Pollution Abatement Committee or for dark-sky enquiries, please click the button below. Contact us

rasc-vancouver.com

(or wait 15 Years) Start observing Mars - Now, Today, or as soon as we get a clear night after the wildfire smoke clears out. The upcoming close approach a

asnsw.com

Metal badge, 2.3cm diameter with pin at back for pinning to your parka or hat. Free postage with a larger item - contact the treasurer (email, phone or txt) to ask for a coupon code before you place your order.

astroleague.org

Analemma Observing Program Coordinator: Douglas Smith 6032 S. Nantac Rim Dr. Tucson, AZ 85706 (520) 396-3233 Email: dsmith217@cox.net Introduction Just about everyone knows that the Sun’s altitude at culmination, the highest point above the observer’s horizon, varies throughout the year – higher in the summer, and lower in the winter. However, outside of navigators, cartographers and

memphisastro.org

Memphis Astronomical Society Official DarkSky Site.