While sitting outside last night, I witnessed a seemingly low-flying egg-like object move incredibly fast through the sky. The view from my 3rd story deck spans from northeast to southwest, and the object crossed the entirety of that view in a span of about a second and a half, similar to the speed you might witness in a shooting star. In trying to judge how high it was flying, I can compare against the backdrop of skyscrapers I see southeast from my location, and it appeared to be flying at perhaps the height of a helicopter (there was also a great deal of helicopter action in the sky last night due to the election). I was also able to make out in that brief moment that it was an elongated, oval or egg-like shape, which also suggested it wasn't flying terribly high. Additionally, I saw it pass in front of my view of several of the skyscrapers of downtown Chicago, which are between 1-2 miles south of me. The object itself was egg-shaped from the brief glimps! e I got, and it glowed. There were no distinguishable individual lights on it, and nothing blinking. A very large tail of light followed behind it, perhaps due to speed. The light was bright, but not blinding. It moved in a gently arced, horizontal line, not straight across the sky. There was no sound as it passed, which struck me as peculiar given its incredible speed and seemingly low-flying position. It traveled from east to southwest, disappearing from my view as it flew past the visual barrier I have of the exterior wall of my building that defines the end of my outdoor space. My husband and neighbor were also outside, but by the time I could shout out, the object was already gone. I would be extremely curious to hear if anyone else had a similar sighting.