Board Thread:General Discussion/@comment-12797719-20150907111000

I was going left to the stardust pillar on my world when i saw a massive blue and white circular symbol? type thing i flew up and the biome changed from hallow to forest and it faded away, a couple of seconds later i saw a horizontal beam type thing that was white appear and then after a couple of seconds dissapear. Does anyone know what it is??? 