You have to think if we've been visited by extraterrestrial life, it was like a zookeeper walking into the chimp enclosure: He looks around, takes some pictures, then leaves without interacting significantly with the environment. Meanwhile the chimps have no idea what the fuck just happened.
Space, as you can see, is a complete void, nothing but clear air, without solid objects or the illumination of light. On some of our photographs of space, however, studied close to, even without a magnifying glass or an enlargement lens, you will notice, in the remote background, stars, some solitary, others in shimmering clusters. And in the next set of photographs you will see the alien machine we encountered that sat stubbornly stationary in the way of our unselfgoverned path.