As the UFO flew past the ISS earlier in the week, NASA astronaut Chris Cassidy was quick of the mark. He caught the object on video as it passed. Of course it did not stay unidentified for long – Russian ground controllers identified it as an antenna cover from the Zvezda service module. See the footage here.
This comes after the US government recently confirmed the existence of Area 51 for the first time. Of course, they confirmed it as a testing area for spy planes, and did not say anything about aliens or crashed alien spacecraft.
The ISS incident got me thinking about UFOs in general, and whether there really has been any alien visitations of Earth in modern times.
Given the vastness of space, and the constraints of physics, I think the most likely alien visitor would be of the robotic kind. Perhaps there has been a probe or two fly past and take so photos. If so, then its next move would be a high-intensity beam communication back to its point of origin. Once more, given the vastness of space, its home civilisation may not pick up the message for hundreds or thousands of years. This of course assumes no advanced SF-type goodies like navigable wormholes or warp drives.
So what do you think? Have aliens visited? Have you seen any truly weird UFOs yourself?