The moon is waning. The evening sky is dark again. Leave the city behind, and go hunting this weekend for the famous Andromeda galaxy. The W-shaped constellation Cassiopeia - one of the easiest constellations to identify - will help point your way to the large spiral galaxy next door. Read more.
The Andromeda galaxy is our Milky Way's nearest large neighbor at 2.5 million light-years away.
The Great Square isn't as noticeable as Cassiopeia. But - if your sky is dark - you'll enjoy locating these stars and using this method of finding the Andromeda galaxy. Read more.
The legendary craft that flew past Pluto in 2015 is still heading outward. New Horizons will sweep past its next target, nicknamed Ultima Thule, on New Year's Day, 2019. Read more.
Besides humans, only 4 species are known to experience menopause, and they're all whales – belugas, narwhals, killer whales and short-finned pilot whales. Read more.
A trio of beluga whales. Image via AQUAS Aquarium in Japan.
SHOP THE EARTHSKY STORE TODAY!
Your support means the world to us and allows us to keep going. At our store you'll find astronomy tools, EarthSky tees, hats, cool gadgets and even toys! Click here to shop
