in 1947
Reports are broadcast that a UFO crash landed in Roswell, New Mexico.
Roswell has benefited from interest in the alleged UFO incident of 1947. It was the report of an object that crashed in the general vicinity in June or July 1947, allegedly an extra-terrestrial spacecraft and its alien occupants. Since the late 1970s the incident has been the subject of intense controversy and of conspiracy theories as to the true nature of the object that crashed. The United States Armed Forces maintains that what was recovered was debris from an experimental high-altitude weather and surveillance balloon belonging to a classified program named "Mogul" however, many UFO proponents maintain that an alien craft was found and its occupants were captured, and that the military then engaged in a cover-up. In recent times, the business community has deliberately sought out tourists interested in UFOs, science fiction, and aliens.
Deaths
in 1695
Christiaan Huygens was a prominent Dutch mathematician, astronomer, physicist and horologist. His work included early telescopic studies elucidating the nature of the rings of Saturn and the discovery of its moon Titan, the invention of the pendulum clock and other investigations in timekeeping, and studies of both optics and the centrifugal force.

in 1895
Jan or Johann Josef Loschmidt, who referred to himself mostly as Josef Loschmidt (omitting his first name), was a notable Austrian scientist who performed groundbreaking work in chemistry, physics (thermodynamics, optics, electrodynamics), and crystal forms.