Object either leaving our atmosphere or transparent at times and then returning to the sky with a second object colliding or joining!

First, I thought it was a star, then it disappeared so I figured maybe it had wenrt behind the cloud, then I thought that was quick for a cloud! So I thought plane, then I realized there were no clouds in the sky so I went for my camera when I was fairly certain it was nothing normal what so ever! I was afraid I would get it but as though it was putting on a show it didn’t disappoint! I didn’t realize second craft until my wife brought it to my attention then I discovered that it popped up at least 3 more times then I realized! So amazing!