The Deep Horizons deep space probe. It exists from the 2010's or 2020's.
The satellite is a probe with four legs and a sphere in the middle, quite resembling Sputnik.
The probe is contained in the second stage of the X-2 rocket. The original legs are not attached to the sphere; rather, they are attached between the longer legs. They are attached later by astronauts.
The probe is first assembled by an EVA (the legs are then assembled) and launched in between Earth and the moon at the L1 point, and after that the probe begins the mission.
Deep Horizons plans to flyby Jupiter and Saturn, then proceed on to exit the solar system.