The thing was floating up and down like absurd boarder would do but was so fast it went from east all the way to west in seconds. it was very high up and very large. there were obvious large parts on it. had a slight glow but very low, like a flashlight behind your hand with a week bulb type tone. it was silent and made me feel uncomfortable....It didnt move like any aircraft i've ever seen. almost had a floating vibe but very fast and with purpose. traveled from the blue ridge parkway all the way to east until it vanished, but not over the horizon, more like straight into space, it may have even been in space. not as fast as a shooting start but faster than any aircraft i've knowledge of, and it had purpose will flying if that makes sense..