Earth’s Moon
Earth and the Moon are more like a double planet than a planet and a moon. The Moon is quite […]
Saturn
Like its larger sibling, Jupiter, Saturn is a ball of hydrogen and helium gas wrapped around a heavy core. Instead
Jupiter
As the Great Red Spot demonstrates, Jupiter is a world of superlatives. It is the largest planet in the solar
Earth
But it was only in the sixteenth century, around the time of Copernicus, that people began to see Earth as
Venus
The Venusian clouds kept astronomers from seeing the planet's surface. Without visible landmarks, they could not measure how fast Venus
Taurus, the Bull
Aldebaran outshines all the other stars that outline the bull’s face. But Aldebaran isn’t a member of the Hyades cluster
Perseus, the Hero
In classical Greek mythology, Perseus beheaded the snake-headed Medusa to save the princess Andromeda from a nasty sea monster. A
Pegasus, the Flying Horse
Pegasus is a character from Mediterranean mythology, although he’s best known for a couple of myths that he wasn’t part
Sagittarius, the Archer
The constellation originated in Sumeria, then was picked up by the Greeks. But they appear to have missed something in
Ursa Major, the Great Bear
Of all the star patterns in the sky, the Big Dipper is the most universally recognized. The dipper’s seven bright