1. A natural phenomenon or equipment glitches 2. A man made device; or 3. Something else
I have no reason to believe they are aliens from space. At this point science and reason don’t support it.
That said, there are scientists, like Garry Nolan (Immunologist of Stanford Medical) and Eric Weinstein (physicist, formerly of MIT, now gone private) and many others like them, top men in their fields, have joined the fray.
Their opinion: Whatever it is, it is something not yet understood...but it isn't human.
” At this point science and reason don’t support it.”
At this point, there’s no reasoning behind science.