DAVINCI (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) is a proposed mission concept for an atmospheric probe to Venus. It lost out to Psyche and Lucy in the 2015 round of proposals for NASA's Discovery Program. It was proposed again on 1 July 2019.DAVINCI would study the chemical composition of Venus' atmosphere during descent. The DAVINCI probe would travel through the Venus atmosphere, sampling the air, and returning measurements down to the surface. These measurements are important to understanding the origin of the Venus atmosphere, how it has evolved, and how...