User:GUENERON/sandbox

Born in Slobozia mare (then in Romania), Eugeniu Grebenikov, astrophysicist and mathematician, calculated the trajectory of the first satellite to be launched around the earth on 4 October 1957 (sputnik1), for which he was awarded the State Medal of the Soviet Union. An asteroid (number 4268) was named after him in October 1972. A unit of measurement for the conquest of space is called the Greben,