An orderly planetary lineup and a dolphin's service remembered

The naked eye planets in our morning lineup can be seen in the same order in the sky that they are in distance from the sun. Old stories tell of the dolphin among the constellations and the animal's service to other beings, including a human in trouble. About two centuries ago, two never previously known star names showed up in a published star catalog. The person who named them took the secret of their origins to his grave. But the names are accepted today and the mystery is solved. Listen to find out more.