Protoplanetary disks
Interplanetary dust
Asteroids
Interplanetary gas
Comets
Solar system
Interplanetary medium
Interplanetary material
Interplanetary matter
The material contained in the solar system in the space through which the planets travel. It consists of the smaller objects such as asteroids, comets, meteorites and also a general pervading interplanetary dust. Moreover a plasma of charged particles streaming outward from the Sun in the form of the solar wind contributes to the interplanetary medium.
Interplanetary grains