It had projected itself down to the surface of a nearby planet.
Its disabled craft having been left silently hovering somewhere between Mars and Jupiter. Its own natural invisibility allowed it to seek sustenance without detection. Quite unseen by the occupants of the planet, it went in search of food. It swiftly moved around the globe. Seeds and nuts, plants and animals of all kinds, were tried. All to no avail. It knew help would come eventually. This would be from some distant place it called home. The search went on. In due course, it found that a number of small parts found in the human form were acceptable, and of greater importance, nourishing. Its feeding habit became simple. First, cloak the subject in invisibility, then sustain itself, unseen.
The strangeness of the species, the peculiar activities that played out in the form of reproduction, global economics and wars, it found fascinating. It became apparent that this was the perfect opportunity to learn about them. These observations meant that it would have many strange and interesting stories to tell when it returned home.
In the fullness of time, it would receive the long-awaited signal from its rescuers. In the meantime, it was not sure whether to study them or eat them?
Until then… it would do both.