When you’re really excited to go somewhere
Wir alle sind aus Sternenstaub, in uns'ren Augen kalter Glanz. Wir sind noch lange nicht zerbrochen, wir sind ganz! Whenever soulmates meet each other they start to glow because of the stardust that is in every human to lead them like a lodestar to the person who is "from the same star". After Afghanistan Tony thinks that he will never glow because of the arc reactor but when he meets Bucky for the first time they start to glow together in a warm happy golden light of the same wavelength.