By Tom Rose
A video posted to YouTube shows the real danger astronauts face when they undertake a spacewalk, as a flashing, spinning UFO buzzes the ISS, coming a bit too close for comfort.
The short clip included here, taken from a six-hour video of the spacewalk conducted by astronauts aboard the International Space Station on Monday, shows cosmonaut Yuri Malenchenko as he performs, appropriately enough, the task of affixing debris barriers on the ISS, designed for greater safety against floating, lethal objects.
As he converses with ground control, a spinning, flashing, unidentified flying object whizzes past at incredible speed. It's kind of unnerving because scientists are very good at pointing the ISS into areas of space safer from that kind of hazard.
It's not known exactly what this UFO is, but it's a sure bet that if it had crashed into the space station, or worse, hit the astronaut, it would have been a monumental disaster.
Seeing the dangers posed by objects floating in the vacuum provides a deeper perspective of the true toughness of space travel.
It's not all glory, and it takes plenty of guts... Here's the video: