Friend asked me to report this here... On this afternoon, me and youngest daughter, aged 11, were watching the clouds and sunset as we normally do. During this, I observed a C5a Galaxy military aircraft flying east to west, I observed this aircraft with binoculars for ID. I commented how big the contrail was and my daughter thought it was very cool. After it passed overhead, it turned to the northwest from my 12 o'clock position, I handed the binoculars to my daughter to watch it. She then stated that there was something beside the plane, I asked flying beside or was it in different travel path. She said no it was beside the aircraft, I asked if it was another plane and she stated she didn't see any wings on it that it looked like a light. She then handed the binoculars back to me. I observed the light and it was white in color, when I saw it, it was no longer beside but had dropped back behind the C5. It was at this point the light began a westward track and seemed very slow. I observed no wings or tail. The object was not flashing but a steady white light color. I asked my daughter if she could she it without the binoculars and she stated no. I looked without them and could not see it. It was only visible with the binoculars. I then handed them back to my daughter but she was unable to find it again. We saw several aircraft that night including a Fed-Ex plane (ID'd by paint scheme with binoculars), all had contrails and were identifiable as winged aircraft. This was not. If I was to guess size, due to the distance I would be hesitant and guess near the size of the engines at the distance we saw.