Escher may be best known for his mind-bending drawings, but a coming sale at Christie's shows a broader picture of the Dutch ...

Everything in space—from Earth and the sun to black holes—accounts for just 15% of all matter in the universe. The rest of the cosmos seems to be made of an invisible material astronomers call ...

Luca della Robbia was an Italian Old Masters artist who was born in 1400. Numerous key galleries and museums such as The Detroit Institute of Arts have featured Luca della Robbia's work in the past.