[1] Born in the USSR, Gruntman grew up as a child at the Soviet Tyuratam Missile Test Range, also known as Baikonur Cosmodrome, in the late 1950s and early 1960s.

[5][failed verification] In IKI and IPM, Gruntman worked on position-sensitive detectors on the basis of the microchannel plates[6] and techniques for the detection of energetic neutral atoms (ENA imaging) in space.

[22] Gruntman also produces educational short videos on satellite orbits and related topics which has attracted more than a million viewers on YouTube.

[24] Gruntman has authored two books on history of rocketry and space technology, published by the American Institute of Aeronautics and Astronautics (AIAA).

[27] He also published a book about pioneers of space Robert Esnault-Pelterie and Ary Sternfeld and the words astronautics and cosmonautics which they had respectively introduced in the language of science and engineering.