You and I are made of elements created by the explosions of ancient stars. Therefore, you and I are at least one of the ways that the Cosmos knows and reasons about itself. It fills me with reverence every time I think about it. Stars come into existence, glow, and ultimately collapse or explode, because of the force of gravity. Protons fuse and release the photons of heat and light that sustain all life here on Earth. And although we can measure and predict the courses of celestial objects and of our own spacecraft with extraordinary accuracy, no one is sure exactly just where gravity comes from. Furthermore, there now seems to be more gravity in the Cosmos than we can find sources to create it. We toss around terms like dark matter and dark energy to account for it. Will we know these one day, too? There’s more. Humankind seems to be on the verge of harnessing fusion, stellar energy, and limitless electricity for all. No matter what happens, we are about to know more about the Cosmos and our place within it. What a time to be alive!