small red light, followed by large white light

I was taking my dog out to go potty when I glanced up at the sky to admire the constellation Orion and saw a small reddish light moving southwest. Due to its apparent altitude, I assumed it was the International Space Station, so I excitedly pulled up the stargazing app on my phone to confirm my suspicion. When the app failed to identify the light, I watched it until it disappeared over the treeline, trying to figure out what it was. After it vanished from sight, I took my dog into the backyard to do her business, and was surprised to see another light —  this one much larger than the first, bright white, and moving northeast. I looked for the flashing red and green lights that would identify the light as a helicopter or airplane, but nothing. I also heard no sound. I pulled up my trusty stargazing app again to see if THIS was the ISS, but it was not. Thinking quickly, I pulled up the camera on my phone and filmed the light until it, too, vanished behind the! treeline. This second object was in view for maybe 30 seconds, and the whole encounter was maybe shortly over a minute. My dog did not respond to either object, but to be fair, she was busy.