Space telescope
A space telescope was a telescope in space used for observing celestial bodies.
Prior to the Europa Mission of the 2020s, these telescopes were one of the tools used by Human scientists for studying the environment of Jupiter's moon Europa. When the scientists examined the observations from these telescopes, along with the observations from ground-based telescopes and the probe Galileo, they became more convinced that there really was an Europan ocean. (PIC: "Two of One")