Stern has also developed eight scientific instruments for planetary and near-space research missions and has been a guest observer on numerous NASA satellite observatories, including the International Ultraviolet Explorer, the Hubble Space Telescope, the International Infrared Observer and the Extreme Ultraviolet Observer.
Stern juga telah mengembangkan delapan instrumen saintifik untuk planetarium dan misi penelitian dekat ruang angkasa dan juga menjadi observer tamu pada sejumlah observatorium satelit NASA, yakni International Ultraviolet Explorer, Hubble Space Telescope, the International Infrared Observer dan Extreme Ultraviolet Observer.