The Venus In Situ Explorer (VISE) has been a lander mission concept 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.

[3][4] The lander would also release a short-lived balloon to measure cloud-level winds.

[8] VISE was again an eligible theme, this time one of eight, in the 2009 competition to select New Frontiers Mission 3.

[9] One VISE-themed proposal, Surface and Atmosphere Geochemical Explorer or SAGE, was an unsuccessful finalist.

Of the 12 proposals submitted and reviewed by NASA, three were associated with this theme: two lander proposals, Venus In situ Composition Investigations (VICI) and Venus In Situ Atmospheric and Geochemical Explorer (VISAGE); and the Venus Origins Explorer (VOX), an orbiter whose proponents claimed would achieve similar scientific outcomes.