The Planetary Science Division in NASA’s Science Mission Directorate is seeking subject matter experts to serve as reviewers and has recently posted volunteer forms for the following ROSES-2017 programs:
C.12 Planetary Instrument Concepts for the Advancement of Solar System Observations (PICASSO)
C.14 Planetary Science and Technology Through Analog Research
Either click on the titles above or start at this permanent link https://science.nasa.gov/researchers/volunteer-review-panels that list all of the current forms.