Awesome NASA Video Captures What Looks Like an Alien Spaceship (Updated) For the linkaphobic: Someone studying images from NASA's STEREO A satellite, which is designed to study the sun's surface and activity, recorded a coronal mass ejection and its interactions with Mercury. However, the image also captured the CME interacting with something else. This got attributed quickly to a possible artifact in the video. Which was fine, except it turns out that STEREO B, the companion satellite recording from the opposite side, also picked up this object. I suspect we'll find out the answer is a lot more mundane than a cloaked alien space ship, but if nothing else the video is fascinating to watch.