The Discovery of the First White Dwarf: Sirius B

On January 31, 1862

Alvan Graham Clark discovered the white dwarf star Sirius B.

He discovered the star through an 18.5-inch (47 cm) telescope, which is now located at the Northwestern University.

This Day in History - January 31

1958

The first American satellite, Explorer 1, was launched into space.

2015

New Zealand golfer Lydia Ko became the youngest golfer to rank No. 1 in the world.

1971

NASA's Apollo 14 spacecraft was launched and headed for the moon.

1949

The first-ever daytime soap opera, These Are My Children, aired on NBC.

1905

British driver Arthur MacDonald was the first to break 100 miles per hour in an automobile at Daytona Beach, Florida, US.

What Happened on Jan 31?

What Happened in 1862?