To help them in this seemingly impossible endeavor, the researchers used radio astronomy data, which provided the relative speeds at which the galaxies and their constituent parts are currently moving.

• ”为了给他们这种令人难以置信的努力提供帮助，研究人员使用了射电天文学的资料，这种资料为星系以及组成部分当前的运行提供了相关速度。