1 January edit
- 1894 - Satyendra Nath Bose's birthday.
- 1801 - Giuseppe Piazzi is the first to notice the dwarf planet Ceres. However, very soon astronomers lose sight of its orbital path. After some months, Giuseppe Piazzi finally calculates its correct position on December 31.
- 1985 - Ernie Wise, a comedian, places the first mobile phone call in the UK.
2 January edit
- 2 January 1822 - Rudolf Clausius was born.
4 January edit
- 4 January 1643 - Sir Issac Newton was born
8 January edit
- 8 January 1942 - Stephen Hawking was born, on the same day that Galileo Galilei died in 1642.
15 January edit
- 15 January 1908 - Edward Teller was born.