Draft Small Heliophysics Explorer Missions and Heliophysics Explorer Missions of Opportunity (MOs) AOs Released for Community Comment Release Date: March 11, 2016 Comments Due: April 8, 2016 Identification Number: NNH16ZDA003J (Draft 2016 Small Heliophysics Explorer AO) Identification Number: NNH16ZDA004J (Draft 2016 Heliophysics Explorer Missions of Opportunity) On March 11, 2016, the National Aeronautics and Space Administration (NASA) Science Mission Directorate (SMD) is releasing two Draft solicitations for community review and comment entitled the Draft 2016 Small Heliophysics Explorer (SMEX) Announcement of Opportunity (AO) and the Draft 2016 Heliophysics Explorer Missions of Opportunity (MO) Program Element Appendix (PEA) for the Second Stand Alone Missions of Opportunity Notice (SALMON-2) AO. Upon the release date, the full text of both draft solicitations will be available at http://nspires.nasaprs.com/. The Heliophysics Explorers Program conducts Principal Investigator (PI)-led space science investigations relevant to SMD's Heliophysics programs. Explorer investigations must address NASA’s goals to understand the sun and its interactions with the Earth and solar system, including space weather. Participation is open to all categories of organizations or institutions, U.S. or non-U.S., including educational, industrial, and not-for-profit institutions, Federally Funded Research and Development Centers (FFRDCs), University Affiliated Research Centers (UARCs), NASA Centers, the Jet Propulsion Laboratory (JPL), and other Government agencies. The comment period for the Draft 2016 SMEX AO and the Draft 2016 Heliophysics Explorer MO PEA ends on April 8, 2016. The issuance of the Draft 2016 Small Heliophysics Explorer AO does not obligate NASA to issue the 2016 Small Explorer AO and solicit proposals. The issuance of the Draft 2016 Heliophysics Explorer MO PEA does not obligate NASA to issue a 2016 Heliophysics Explorer MO PEA and solicit proposals. Any costs incurred by prospective investigators in preparing submissions in response to any of these draft solicitations are incurred completely at the submitter's own risk. Comments on both drafts may be addressed in writing or by E-mail to the Heliophysics Explorer Program Scientist: Dr. Jeffrey Newmark, Heliophysics Division, Mail Suite 3M81, Science Mission Directorate, National Aeronautics and Space Administration, Washington, DC 205460001, E-mail: jeffrey.newmark@nasa.gov (subject line to read "SMEX AO"). Responses to all inquiries will be answered by E-mail and also posted weekly at the Frequently Asked Questions (FAQ) location of the Heliophysics Explorer Program Acquisition website at http://explorers.larc.nasa.gov/HPSMEX/; anonymity of persons/institutions who submit questions will be preserved.