If we occam away the more exotic possibilities, it is most likely that as the above poster says, some form of space-mil tech being tested, or used. Maybe in a portion of the sky that apart from pilots in their darkened cocpits, no man would be there to see it (whatever). All those billions that seem to disappear in projects that don't stand up to scrutiny must be going somewhere and these sightings could well be the result.
Last edited by SpringHeeledJack; 20th Nov 2022 at 18:32.