While checking out the clear view of the stars last night at approximately 10:00 pm (March 30, 2013) we witnessed an unknown, extremely large triangular shaped object with large lights on the bottom of it moving across the sky faster than any F-16, B-52 or passenger jet we've ever seen. At first my husband thought it was a shooting star because of its speed, but immediately saw that it was indeed an aircraft with lights on two distinct sides. We could determine it's size by the lights shining under the aircraft. Although the lights were much dimmer than the stars or a jet, they had a bluish hue that allowed us to see the outline of the aircraft which was definitely a triangle, not a formation of five aircraft. There was no noise, and when a tree blocked our view and we ran to the end of the driveway to get a better view it was gone. At the same time a passenger jet was traveling southeast to west. The jet had its navigational lights on and was much, much lower, slower and much smaller than what we had just witnessed.