The development of space instrumentation under the CubeSat standard has launched a "New Space" era in which missions develop much faster and at considerably lower cost than traditional space exploration. Vastly used for communications and EO science, CubeSats also have incoming possibilities for Astrophysics research, with the potential to be a complement (spatial, temporal or spectral) for large ground and space observing facilities. Recent missions taking CubeSat technology to the Moon, Mars and minor bodies in the Solar System are a good proof of this. Carrying out such projects in close collaboration with research institutions and companies is the main goal of IACTEC-Space, a long-term space program from the Instituto de Astrofísica de Canarias (IAC) with the aim of developing high-performance instrumentation on board small satellites.