Celestial Pillars

The Celestial Towers are four Bosses. They appear during the Lunar Events. There is the Vortex Pillar, the Stardust Pillar, the Nebula Pillar and the Solar Pillar. You have to defeat a number of enemies before you can destroy them. When you destroy them, you see purple text afterwards. When you kill the first one, it says "Your mind goes numb...", the second says "You are overwhelmed with pain...", the third says "Otherworldly voices linger around you...". Reference to Terraria Otherworld much? And the fourth one says "Impending doom approaches...". Pretty creepy.