All across the Universe, trillions of galaxies can be seen, with each one typically containing billions and billions of stars. Here on Earth, life not only arose, thrived, and became complex and differentiated, but intelligent, technologically advanced, and even spacefaring, to a degree. But these last advances — taking us into the space and information ages — are extremely recent, and space is enormous. If an alien civilization saw us, would we even appear interesting from their perspective? Tayte Taliaferro wants to know, asking: "I was thinking about the projection of light through space. My curtain was open and I...