We describe the mission concept of the COBRAS (Cosmic Background Radiation Anisotropy Satellite) mission. The primary goal is to map the CBR anisotropy with an angular resolution of 0.5 degrees and with a sensitivity of Delta T/T approximate to 10(-6). The proposed mission requires a special orbit, preferably far from earth, and good shielding as well as current state-of-the-art receiver technology. COBRAS will find the signatures of structure formation in a mission combining full sky coverage with a few deep scans covering about 10% of the sky.