A brown dwarf is a very small, dark object, with a mass less than 1/10 that of the Sun. They are "failed stars" – globules of gas that have shrunk under gravity, but failed to ignite and shine as stars.

Until the Middle Ages, passports were given only to the privileged well-to-do. In 1215, the Magna Carta established that "All merchants are to be safe and secure in leaving and entering England." One of the earliest U.S. ...Read More

Seven-foot-two Kareem Abdul-Jabbar was born just a bit longer than the average newborn at 22½ inches, but he weighed a hefty 12 pounds, 11 ounces. His name at birth was Lewis Alcindor.

Saint Boniface is said to have substituted a fir tree for the pagan oak in the eighth century as a symbol of faith. Martin Luther fostered the Christmas tree cult by using a candlelit tree as a symbol of Christ's heavenly ...Read More

Snails have teeth. They are arranged in rows along the snail's tongue and are used like a file to saw or slice through the snail's foot.

In architecture! Gargoyles are the carved terminations to spouts which convey water away from the sides of buildings. Gargoyles are mostly grotesque figures. The word comes from the French gargouille, originally the throat...Read More