Recently NASA attached a bunch of high-definition cameras to the outside of the International Space Station.
The main result -- for those of us on the sidelines of space research and commerce -- has been a few days of utterly beautiful images of Earth.
Inevitably, it has also been something of a treasure trove for UFO hunters. A brief search on YouTube and conspiracy theory sites reveals a bunch of different sightings of unidentified objects - some mere flashes in space, others quite hilariously huge - which they claim are aliens above the Earth.
And NASA is predictably silent. To read more, click here.