"Hot off the presses". Stellarwest's post, Friday, 7-9-'21, that the supernova of Betelgeuse may be visible on Earth within ~5+ years. The analysis and program code are delineated. Well worth the read and pondering, and for the "thru the bits types" a nice weekend project to tinker with.
There are so many craft in Earth orbits now that they photobomb night sky photography and present a risk of crashing into and disabling other craft.
Put succinctly, the amount of junk circling the Earth.