Finsen

At around the start of the 20th century, scientist Niels Ryberg Finsen developed a light-based treatment for lupus vulgaris, a form of TB that affects the face.

Finsen’s work won him a Nobel Prize in 1903 and paved the way for light-based therapies in many other ailments and the more recent use of red and blue LED lights for skin care and some therapeutic applications.

Today’s fascination with natural and artificial ultraviolet light for fighting disease hearkens to the early 20th century when Danish physician Niels Ryberg Finsen won the 1903 Nobel Prize for inventing light therapy, including for treating painful skin tuberculosis.

Nearby are several other craters, such as the 72-kilometer-wide Finsen crater, thought to be about 3.2 billion years old.

The material was probably scattered across the surface when another impact later created the nearby 72-kilometre-wide Finsen crater.