The Pandora Mission, Pandora SmallSat, or Pandora, is a small satellite mission known as SmallSat, one of three orbital missions approved by NASA to pass to the next development phase in NASA's Astrophysics Pioneers program.[1][2][3] The budget for each mission was $20 million.[4]
The mission is intended to determine atmospheric compositions by observing exoplanets and their host stars at the same time in both visible and infrared light over long periods of time.[1][5]
The satellite will have sensitivity to identify exoplanets with hydrogen or water in present in their atmospheres, as well was what exoplanets are covered by clouds or hazes.[6] Pandora will observe 20 stars and their 39 exoplanets with sizes that range from Earth-size to Jupiter-size, and host stars ranging from mid-K to late-M spectral types.[7][8]