2020-07-17 - Havertown, PA - Sphere

I was looking at Saturn and Jupiter in the Eastern sky around 10 pm when I noticed a light traveling from the East heading northwest towards me. I assumed it was a plane because it was coming from the direction of Philadelphia International Airport. It made no sound so I assumed it was flying high but it seemed to be moving too fast if it was in high altitude. Then it seemed to stop and fade in brightness as it got smaller and smaller till it disappeared. I immediately thought I must be looking at a rocket heading out into space but that made no sense. The whole thing happened in a span of about ten seconds. I’m an amateur astronomer and quite familiar with the night sky and the planes that cross my region. This wasn’t a plane. It was a round bright object appearing slightly larger than Jupiter in the night sky. What struck me was how fast it all happened. I was thinking, “That’s funny, a plane coming from Philly and already that high in the sky?” Then it s! tops and heads out to o space? Weird. Did I see a UFO?