The shuttle separated from the ISS a couple days ago in preparation for a landing tomorrow.
Last night the ISS and the space shuttle put on an amazing show as they streaked across the sky at about 8:30PM and then again at about 10:30PM.
Tonight is supposed to be even brighter and longer if the moon isn't in the way.
Here are the details for Las Vegas for tonight:
Starts at 9:23:32PM PDT at 10° NNW (10 degrees is just above the horizon)
Ends at 9:27:17PM PDT at 25° E
To see it from your location enter your location at
http://heavens-above.com/countries.aspx 