Mission overview
The Chinese Academy of Science (CAS)' Pathfinder-1 satellites is built for in-orbit validation of critical technologies for the upcoming main missions of CAS' "Origins” Space Science Program, which consists of 4 upcoming astronomical observatory missions to be launched by 2030: * Discovering the Sky at the Longest wavelength (DSL * Solar Polar Orbit Observatory (SPO) * Earth 2.0 (ET) * Enhanced X-ray Timing and Polarimetry (eXTP) The mission consists of a main satellite and 3 sub-satellites, the later of which flies in formation to demonstrate a low frequency radio astronomy interferometry instrument. The main satellite also contains the following science instrument: * Very Large Area Gamma-ray Space Telescope Pathfinder (VLAST-P) * a magnetometer (MHI) * an upper atmosphere LiDAR (HiRAL) * a Langmuir Probe (LMP) * a space weather monitor (SWEM)