
While the authenticity of the video remains of a question, the probabilities of an alien spaceship are slim to none, but instead could be a top-secret DARPA hypersonic vehicle.
As we've explained on several occasions, DARPA is actively testing these vehicles that can fly between Mach 5 (3,836 mph) and Mach 10 (7,672 mph).
http://www.zerohedge.com/technology/did-iss-live-feed-accidentally-capture-top-secret-hypersonic-vehicle-test?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+zerohedge%2Ffeed+%28zero+hedge+-+on+a+long+enough+timeline%2C+the+survival+rate+for+everyone+drops+to+zero%29

Realist - Everybody in America is soft, and hates conflict. The cure for this, both in politics and social life, is the same -- hardihood. Give them raw truth.