e/Dynamical friction

Information
has gloss	eng: Dynamical friction is a term in astrophysics related to loss of momentum and kinetic energy of moving bodies through a gravitational interaction with surrounding matter in space. It is sometimes referred to as gravitational drag, and was first discussed in detail by Subrahmanyan Chandrasekhar in 1943.
lexicalization	eng: dynamical friction
instance of	c/Effects of gravitation