I was at home last night, getting ready to settle in and had this overwhelming urge to look out my East facing window. When I did, I saw something circling in the sky over a residential area. It was dark so it was hard to see the shape of the object but it almost looked spherical with a steady green light and slow flashing red light emanating from it. It did not look like anything I've ever seen in the sky and it was definitely not a helicopter or airplane. I watched it for a few minutes and noticed it quickly circled around 3 or 4 times with a diameter of a few hundred feet and probably a few hundred feet above the residential area. After it was done circling, it hovered for about a minute or two and then took off in a southwest direction somewhat close to my house. I felt really strange after seeing this and wanted to grab my camera at the time but wasn't sure if it would show up because it was so dark and I also didn't want to miss it. After it took off, I have no idea where it ended up.