In 1607, Kepler discovered a sunspot with the help of the camera obscura although, at first, he thought it was the planet Mercury. Years later, in 1656, Velázquez used the camera obscura to specify his famous Meninas

Analysis shows that prolonged exposure to low doses of radiation can be as harmful as the same amount received all at once

In an article just submitted to Physical Review Letters, a team of researchers from the Fermilab laboratory in Chicago, which houses one of the largest particle accelerators in the world, claims to be closer than ever to the discovery of a...

It was September 1991 when some German hikers were walking through the Ötzal Alps, on the border between Austria and Italy. At an altitude of 3,200 meters they were surprised by a lump on the ground. As they approached, they saw the small body of a man. …