Interstellar Technologies, Inc. , or IST, is a Japanese private spaceflight company aiming to eventually build a launch vehicle for smallsats under 100 kg. It is a rocket spacelaunch company developing the MOMO sounding rocket and the orbital launch vehicles called ZERO and DECA. Interstellar's stated goal is to reduce the cost of access to space. Interstellar is attempting to have the first privately developed rocket in Japan to reach space.