On June 30, 2006, MOST celebrated three years of being in space. In that time, the busy science team has amassed data on some 400 stars unlike any observations ever obtained by astronomers. And exploration continues…

In the same month, MOST measured differential rotation in the Sun-like star Epsilon Eri, which rotates about twice as fast as our Sun. These measurements of the motions of its spots at different latitudes confirm theoretical predictions that our Sun would have been spinning at about the same rate long ago at this stage in its development.

More recently, MOST discovered a new class of variable star: the slowly pulsating B supergiant (SPBsg). This class shows great promise in the drive to understand the structure and life histories of massive stars.