X-ray: It's a Rembrandt!

Researchers have authenticated a painting by Rembrandt and uncovered a mistake the Dutch artist has been trying to hide for 381 years.

New x-ray technology has been used to authenticate incredibly old paintings by detecting pigment in hidden layers of paint. The painting "Old Man with Beard," which was long believed to be the work of a Rembrandt disciple, has been revealed as an original Rembrandt after the x-ray scan found a self-portrait of the Dutch artist hidden in the layers of paint. Tipped off by artistic similarities to one of his 80+ other self-portraits (and the fact that a 1633 copy of the work said “by: Rembrandt”), the research team put the work in question through a variety of high-tech scans. Similar technology has also been used to uncover paintings that Van Gogh and Goya tried their best to paint over. Mistakes: you can try to escape them, but hundreds of years after you die, people will catch on.