English: This animation showing a highly magnified view of how Dimorphos’ orbit around Didymos is seen from Earth, approximately one week after the DART impact. Each time around the orbit, Dimorphos passes through the shadow cast by Didymos, and half an orbit later, briefly casts a shadow onto Didymos. In reality, only the combined light from both asteroids can be seen by telescopes. The graph shows how the total brightness dips slightly when either body is shadowed by the other. DART astronomers measure the time intervals between the dips that mark these eclipse events in order to determine the new period of the orbit.