Physicists want to use ultracold gases in space to measure the Earth’s gravitational field, to subject Einstein’s Equivalence Principle to an accurate test, and also to detect gravitational waves. The first flight in a sounding rocket made it now possible to test the necessary technologies and experimental steps required for measurements of this nature. In doing so, the group generated a Bose-Einstein condensate and was able to examine its properties in space for the first time.