I think there's a fairly big thread over in Social Australia about this.
For me Occam's Razor informs. What's more likely - aliens that have the technology to travel thousands of light years yet can't drive properly in Earth's atmosphere and only appear to Daily Mail readers, or existing phenomena - weather balloons, auroras, ball lightning, light patterns, electronic glitches and hoaxes?
As for US congress - half of them seriously believe Trump is their best hope, so not a lot of logic going on in those heads.