NASA's Science Mission Directorate (SMD) currently operates over five dozen missions, with approximately two dozen additional missions in development. These missions span the scientific fields associated with SMD's four divisionsâ€"Astrophysics, Earth Science, Heliophysics, and Planetary Sciences. Because a single mission can consist of multiple spacecraft, NASA-SMD is responsible for nearly 100 operational spacecraft. The most high profile of these are the large strategic missions, often referred to as "flagships." Large strategic missions are essential to maintaining the global leadership of the United States in space exploration and in science because only the United States has the budget, technology, and trained personnel in multiple scientific fields to conduct missions that attract a range of international partners. This report examines the role of large, strategic missions within a balanced program across NASA-SMD space and Earth sciences programs. It considers the role and scientific productivity of such missions in advancing science, technology and the long-term health of the field, and provides guidance that NASA can use to help set the priority of larger missions within a properly balanced program containing a range of mission classes.

The James Webb Space Telescope is transforming the universe right before our eyes—and here, for the first time, is the inside account of how the mission originated, how it performs its miracles of science, and what its revolutionary images are revealing. Pillars of Creation tells the story of one of the greatest scientific achievements in the history of civilization, a $10 billion instrument with a staggeringly ambitious goal: unlocking the secrets of the cosmos. Award-winning science writer Richard Panek stands us shoulder to shoulder with senior scientists as they conceive the mission, meet decades-long challenges to bring it to fruition, and, now, use its unprecedented technology to yield new discoveries about the origins of our solar system, to search for life on planets around other suns, and to trace the growth of hundreds of billions of galaxies all the way back to the birth of the first stars. The Webb telescope has captured the world’s imagination, and Pillars of Creation shows how and why—including through sixteen pages of awe-inspiring, full-color photos. At once a testament to human ingenuity and a celebration of mankind’s biggest leap yet into the cosmos, Panek’s eye-opening book reveals our universe as we’ve never seen it before—through the lens of the James Webb Space Telescope, a marvel that is itself a pillar of creation.