There are many variations to look for in scenes of landscape paintings, particularly in images that depict sunset, twilight and moonlight.

The painting has been identified as a van Gogh after "extensive research," a museum says "A discovery of this magnitude has never before occurred," the Van Gogh Museum says More than 120 years after ...

(CNN) -- More than 120 years after Vincent van Gogh's death, a new painting by the Dutch master has come to light. The Van Gogh Museum in Amsterdam, which holds the largest collection of the artist's ...