NGC 604 is a massive, star-forming nebula located in the Triangulum Galaxy (M33), about 2.73 million light-years away The Butterfly Nebula is a planetary nebula that looks like a butterfly. It's also ...

This family of snakes has the most species in the world. Three things they have in common are that they have no pelvic girdle, no functioning left lung, and large scales on their heads. They lay eggs, ...