Space exploration has been ongoing since the 1950s, but modern technology has allowed human beings to uncover truths about the galaxy in ways that we couldn't in previous decades. From robots that gather data and images of faraway planets and moons to improved human spaceflight, we have gained a greater understanding of space at the hands of technological advancements--and we're still learning more every day! Readers can immerse themselves in the celestial universe throughout this volume, as they uncover many kinds of technology that is used to study astronomy through eye-catching images and accessible text.