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Though privileged to live in times when space exploration and technology have advanced our knowledge of the universe at breath-taking speed, we still live as if we are the ones around whom the sun rises and sets. Moving from the most intimate of human activities to the profound and expansive dimensions of the universe, this collection of poetry by Carol Smallwood explores, as did Edwin Hubble, the elusive mysteries of life. The vision, shared by all of us—poets, artists, laborers, homemakers, and space explorers—is to make the best of this world while seeking to understand it more fully. Smallwood's passion for this vision is the clear focus of this lovely volume of poems.
Chasing Hubble's Shadows is an account of the continuing efforts of astronomers to probe the outermost limits of the observable universe. The book derives its title from something the great American astronomer Edwin Hubble once wrote: "Eventually, we reach the dim boundary—the utmost limits of our telescopes. There, we measure shadows, and we search among ghostly errors of measurement for landmarks that are scarcely more substantial." The quest for Hubble's "shadows"—those unimaginably distant, wispy traces of stars and galaxies that formed within the first few hundred million years after the Big Bang—takes us back, in effect, to the beginning of time as we are able to perceive it, when the first discrete stellar objects appeared out of what has lately come to be known as the "cosmic dark age." The information that is being gleaned from these dim sources—chiefly with the aid of Hubble's namesake, the Hubble Space Telescope—promises to yield clues to many cosmic puzzles, including the nature of the mysterious "dark energy" that is now believed to pervade all of space.
Smallwood's passion for making the best of this world while seeking to understand it more fully is the clear focus of this lovely volume of poems.
The author presents an account of the continuing efforts of astronomers to probe the outermost limits of the observable universe with the telescopes that promise to yield clues to many cosmic puzzles, including the nature of the mysterious dark energy that is now believed to pervade all of space.
A beautiful picture book about the astronomer Edwin Hubble that invites children to ponder How many stars are in the sky? How did the universe begin? Where diid it come from?
This book introduces an analytic method to describe the shadow of black holes. As an introduction, it presents a survey of the attempts to observe the shadow of galactic black holes. Based on a detailed discussion of the Plebański–Demiański class of space-times, the book derives analytical formulas for the photon regions and for the boundary curve of the shadow as seen by an observer in the domain of outer communication. It also analyzes how the shadow depends on the motion of the observer. For all cases, the photon regions and shadows are visualized for various values of the parameters. Finally, it considers how the analytical formulas can be used for calculating the horizontal and vertical angular diameters of the shadow, and estimates values for the black holes at the centers of our Galaxy near Sgr A* and of the neighboring galaxy M87.
A gentle story about sadness showing that sometimes all you need to feel better is the openness of someone who accepts you as you are.
The first American woman to walk in space recounts her experience as part of the team that launched, rescued, repaired, and maintained the Hubble Space Telescope The Hubble Space Telescope has revolutionized our understanding of the universe. It has, among many other achievements, revealed thousands of galaxies in what seemed to be empty patches of sky; transformed our knowledge of black holes; found dwarf planets with moons orbiting other stars; and measured precisely how fast the universe is expanding. In Handprints on Hubble, retired astronaut Kathryn Sullivan describes her work on the NASA team that made all this possible. Sullivan, the first American woman to walk in space, recounts how she and other astronauts, engineers, and scientists launched, rescued, repaired, and maintained Hubble, the most productive observatory ever built. Along the way, Sullivan chronicles her early life as a “Sputnik Baby,” her path to NASA through oceanography, and her initiation into the space program as one of “thirty-five new guys.” (She was also one of the first six women to join NASA’s storied astronaut corps.) She describes in vivid detail what liftoff feels like inside a spacecraft (it’s like “being in an earthquake and a fighter jet at the same time”), shows us the view from a spacewalk, and recounts the temporary grounding of the shuttle program after the Challenger disaster. Sullivan explains that “maintainability” was designed into Hubble, and she describes the work of inventing the tools and processes that made on-orbit maintenance possible. Because in-flight repair and upgrade was part of the plan, NASA was able to fix a serious defect in Hubble’s mirrors—leaving literal and metaphorical “handprints on Hubble.” Handprints on Hubble was published with the support of the MIT Press Fund for Diverse Voices.