List of Famous people born in January

Gerald F. Hoyt was American racing driver from Chicago, mainly competing in the National Championship. He died in 1955 after crashing in a Sprint car race at Oklahoma City.

Hartland Sweet Snyder was an American physicist who along with Robert Oppenheimer calculated the gravitational collapse of a pressure-free sphere of dust particles as described by Einstein's general relativity, and found they contracted onto a radial distance, the Schwarzschild radius. It was later interpreted as the particles ending in the particles disappearing beneath the 'event horizon' associated with a Black Hole singularity. In recent years, it was shown by Trevor Marshall that the particle trajectories end in a shell of infinite density at the 'event horizon' radius, supporting the shell collapsar as endpoint. Snyder’s argument that the “star thus tends to close itself off from any communication with a distant observer” which is quoted as an early inference of a Black Hole, does not follow from his model. Only the very surface of the infinite density shell could reflect or emit radiation and solutions without a density singularity are needed to investigate the issue.

Julia Spencer-Fleming is an American novelist of Mystery fiction. She has won the Agatha Award, Anthony Award, Macavity Awards, Dilys Award, Barry Award, the Nero Award, and Gumshoe Awards. She has also been a finalist for the Edgar Award. Her books feature Clare Fergusson, a retired helicopter pilot turned Episcopal priest and Russ Van Alstyne, a police chief. They are set in Millers Kill, a fictional town in upstate New York.

Julia Scharf is a German television presenter.