SpaceX launched 48 Starlink satellites last Thursday. That's a whole train of them in low orbit. They catch the sun just right at dusk, look like a string of weird glowing dots. Check satellite tracking apps next time, filters out most of the mystery.
Use a good satellite tracker app, like Heavens Above. I check the forecast before I even step outside now. Saw something weird last month, turned out to be a Starlink train passing over. The apps show you exactly what you're looking at, takes all the guesswork out.