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The Venus In Situ Explorer (VISE) has been a mission proposed since 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 in 2024. As of 2013[update] The Principal Investigators are refining and promoting the mission concept. eg. It may use a new atmosphere entry mechanism : A mechanically-deployed aerodynamic decelerator, known as the Adaptive Deployable Entry and Placement Technology (ADEPT).
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 determine the composition and mineralogy of the surface.
Several variant mission concepts for a Venus in situ mission have also been proposed, including both surface and atmospheric exploration: