the silver object looked like as a plate that flew with amazing speed, hanged in the sky for a few minutes

First of all, I saw a fallen star, then it became biger and biger. In a few seconds, this star turned into a very big strange silver object. It looked like a big plate that was overturned, and right on the top of this object was a little light.About 3-5 minutes, it was hanging in the night sky twenty metres (probably, difficult to say, but it was close enough) above the ground, without any sound, like it waited for me. I did not feel anything but excitement, but my mom draged me to the bus. We had two tickets that evening and were late.  I saw how this object flew south.