If there were ever a good time to ponder the cosmos and our place in it, this is it—a moment when the preciousness of being alive is evident in the everyday. Exploring the wonders that lie beyond the Earth and the Milky Way offers an even broader context for that appreciation. Since the Hubble Space Telescope became a pivotal eye in the sky, three decades ago, it has provided astronomical photos of breathtaking beauty—like “Cosmic Reef,” recently released for Hubble’s 30th anniversary—that raise our awareness of life within a vast,…