Milk jug like color and transparency, moved across sky faster than bird flight and traveled across the city skyline until it was out of view it was cloud like and had the shape like a sail though slightly more teardrop shaped but had curved points like a boomerang at the back 3 of us saw it while sitting in a hottub outside i saw it and said,’are you seeing this!?’ and the other 2 looked over and saw it, and we all commented on it as we watched it steadily move across the sky for about a min it gave off no light but seemed to reflect the ambient light from the city like a cloud, but it never changed shape like a cloud does and maintained the sharp points at the back. also could be described as ghostlike