An eerie spiral lit up the European skies. Here’s why it’s becoming more common

Rocket launches can create eerie patterns in the sky, from undulating bright-blue spirals to glowing “jellyfish” blobs. Here’s why they happen and how to spot them.

​ Rocket launches can create eerie patterns in the sky, from undulating bright-blue spirals to glowing “jellyfish” blobs. Here’s why they happen and how to spot them. Read More Breaking News, Latest News and Videos | CNN