Labels:text | screenshot | font | number OCR: INTERPLANETARY ........................... ........ ........... INTERPLANETARY SPACE IS the region of space between the planets of the Solar System. The term interplanetary describes any form of matter or energy contained within the orbits of the planets and any event that may occur in interplanetary space. Interplanetary dust particles, for example, form a huge cloud that extends outward from the center of the Solar System.