Kit was born on April 6, 1910, in Saint Petersburg, Russian Empire to the family of an employee at the Post and Telegraph Department of Belarusian origin.

In 1918 Kit's family moved to their native village of Aharodniki, now the town of Karelichy, Grodno Region.

After graduation from the Navahrudak Belarusian Lyceum in 1928, Kit entered the physics and mathematics faculty of Vilnius University.

In 1944, Kit and his family, with the retreating German army moved to Germany, first to Opfenbach near Lindau in Bavaria, then to Munich.

Kit took part in multiple American space research projects, including the development of the mathematical apparatus behind the mission to the Moon.

[6] The book received many positive reviews and is referenced in rocket science publications even today.