Parker Solar Probe by the Helios 2 spacecraft. The "Parker Solar Probe" concept originates from a predecessor "Solar Orbiter" project conceived in the 1990s. Similar in design and objectives, the "Solar Probe" mission served as one of the centerpieces of the eponymous Outer Planet/Solar Probe (OPSP) program formulated by NASA. The first three missions of the program were planned to be: the "Solar Orbiter", the Pluto and Kuiper belt reconnaissance mission "Pluto Kuiper Express", and the "Europa Orbiter" astrobiology mission focused on Europa. The original "Solar Probe" design used a gravity assist from Jupiter to enter a polar orbit which dropped almost directly
Solar Jetman or anti-clockwise direction. The pod is subject to inertia but not drag physics depending on the level of gravity of the set planet. The constant pull of gravity changes every level, which makes stable flight challenging and manoeuvring the pod more difficult as the levels progress. "Solar Jetman" has twelve planets and one hidden planet, each with its own gravity and system of enemy-infested caverns. The goal is to navigate these caverns with small jetpods launched from an immobile mothership, on each planet bringing back a piece of the Golden Warpship and enough fuel to journey to the next one.