I’d be more inclined to believe they’re probes from higher dimensional beings than that they’re intelligent life from other stars/planets, but even that I’d give astronomically low odds to. It’s like a 99.999999999% chance it’s some unknown phenomenon or misunderstood sensor reading/glitch, 0.0000000009% chance it’s something from a higher dimension, and 0.0000000001% chance it’s aliens.