Unexplained Beam: What Could It Be?

'Unexplained phenomena' captured by Dr. Eileen Palmer

Is this what a rift in space-time might look like? A portal to an alternate reality?

Or is it another being, alike or unlike us, flitting at speeds only this much visible to the naked eye or phased out of dimension, vibrationally afar and yet so close?

What do you think it is?