Would appear to be a satellite moving across the sky. If you keep your eye's towards the sky, you'll probably see quite a few per night. Sometimes site two in the sky at the same time. A fair few meteors as well. Sometimes these are quite spectacular. Once I saw one that was light bulb shaped and greenish tearing across the sky. Get a telescope, say like a trouble free 4" ED glass refactor. A good quality azimuth mount to go with it. (expensive) These are easy to use. Then do a little sky viewing and you'll see heaps of satellites and meteors over time. Or try viewing with 10 x 50 mm wide angle binoculars or even 7 x 50 mm. But good quality binoculars start at a $1,000. 6" F8 Newtonians on a dobsonian mount are good and CHEAP. But require a little maintenance.
Have done a bit of viewing in my time, but never seen any flying saucers. I do think once I saw a ball lightening tearing across the sky. These look like a white ball. Make no sound and strangely disappear.