Examples of different sequences and technologies used to deploy probes on the surface of celestial bodies: EDL (Entry, Descent & Landing) for atmospheric probes and SDL (Separation, Descent & Landing) on airless environments such as the Moon, asteroids and comets. Note that some techniques do not shed any equipment while others use various systems to secure a soft landing.

Full red arrows point out the deployed or discarded hardware, hollow ones show modules that were returned to the Earth, and red-boxed names identify the main probes.