Intelligent life. Alone? Other worlds? Universe! Ninety one billion light years across. Universe! Two trillion galaxies. Hundreds of billion stars per galaxy. Galaxies billions of light years distant. Light taking longer to arrive than earthβs existence. How could it be known? How could it possibly be known? Known if civilizations exist billions of light years distant. Somewhere in two trillion galaxies. How could it be known? Are we alone? Fools question. Move on.