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The Venus In-Situ Explorer (VISE) is a mission proposed in 2003 by the Planetary Science Decadal Survey as a space probe designed to answer fundamental scientific questions by landing and performing experiments on Venus. It is a candidate for NASA's New Frontiers program to be launched by 2022. The Principal Investigators are currently refining and promoting the mission concept.
While on the surface, the Venus In-Situ Explorer will acquire and characterize a core sample of the surface to study pristine rock samples not weathered by the very harsh surface conditions of the planet. Also, the VISE will measure the composition and mineralogy of the surface.
Several variant mission concepts for a Venus in-situ explorer have also been proposed, including both surface and atmospheric exploration: