Finding Our Place In The Universe

How a team of researchers, led by the author, discovered our home galaxy's location in the universe. You are here: on Earth, which is part of the solar system, which is in the Milky Way galaxy, which itself is within the extragalactic supercluster Laniakea. And how can we pinpoint our location so precisely? For twenty years, astrophysicist Hélène Courtois surfed the cosmos with international teams of researchers, working to map our local universe. In this book, Courtois describes this quest and the discovery of our home supercluster. Courtois explains that Laniakea (which means “immense heaven” in Hawaiian) is the largest galaxy structure known to which we belong; it is huge, almost too large to comprehend—about five hundred million light-years in diameter. It contains about 100,000 large galaxies like our own, and a million smaller ones. Writing accessibly for nonspecialists, Courtois describes the visualization and analysis that allowed her team to map such large structures of the universe. She highlights the work of individual researchers, including portraits of several exceptional women astrophysicists—presenting another side of astronomy. Key ideas are highlighted in text insets; illustrations accompany the main text. The French edition of this book was named the Best Astronomy Book of 2017 by the astronomy magazine Ciel et espace. For this MIT Press English-language edition, Courtois has added descriptions of discoveries made after Laniakea: the cosmic velocity web and the Dipole and Cold Spot repellers. An engaging account of one of the most important discoveries in astrophysics in recent years, her story is a tribute to teamwork and international collaboration.

Details the science behind the Copernican Revolution, the transition from the Earth-centered cosmos to a modern understanding of planetary orbits.

Our Place in the Universe tells the story of our world, formation of the first galaxies and stars formed from great clouds containing the primordial elements made in the first few minutes; birth of stars, their lives and deaths in fiery supernova explosions; formation of the solar system, its planets and many moons; life on Earth, its needs and vicissitudes on land and in the seas; finally exoplanets, planets that surround distant stars. Interspersed in the text are short pieces on some of those who revealed these wonders to us.It is written in a very authoritative and readable form and contains more than 100 color prints of the marvelous galaxies, and nebula that have been taken from space-based and land-based telescopes carried by NASA missions, the European Space Agency, the European Southern Laboratory in Chile and many other sources.

Do you wonder if humans are the only beings who wonder if they are alone in the universe? Our sun is a star. In the night sky are all kinds of stars, and orbiting those stars are planets like the ones in our own solar system. Could those planets have life like we do on Earth? Planet Earth is not too big, not too small, not too hot, and not too cold. It’s just right. Our very own Goldilocks planet . . . . Follow a young girl as she explores these questions in this gorgeous book about the wondrous search for another Goldilocks planet.

If you have ever wanted to understand the basic principles of astronomy and celestial movements, you should read this book. Using pictures of the sky observed from different places on Earth, as well as drawings of ancient astronomical methods and tools, Prof. Sun Kwok tells this story in an entertaining and fascinating way. Since the beginning of human civilization, people have wondered about the structure of the cosmos and our place in the Universe. More than 2,000 years ago, our ancestors knew that the seasons were unequal, the Earth was an unattached object floating in space, and stars existed that they could not see. From celestial observations, they concluded that the Earth was round. Using simple tools and mathematics, ancient astronomers accurately determined the sizes of the Earth and Moon, the distance to the Moon, and the lengths of the months and year. With a clever device called the armillary sphere, Greek astronomers could predict the times of sunrise and sunset on any day of the year, at any place on Earth. They developed sophisticated mathematical models to forecast Mars’ motions hundreds of years into the future. Find out how ancient observers achieved these remarkable feats. With minimal use of mathematics, this book retraces the footsteps of our ancestors, explains their intellectual journeys in simple terms, and explores the philosophical implications of these discoveries.

Explores Earth s role and place in universe; discusses origin theories for planets in our solar system; light waves, light years, measuring distances and sizes; components of the universe (stars, nebulae, and galaxies) and relation to Earth; characteristics that allow life to exist such as the proximity of the Sun, presence of water, and composition of the atmosphere.

The Scientific Revolution began with the publication of Copernicus’ heliocentric theory describing the Sun as the center of our solar system and all the known Universe. That revolutionary idea began a rethinking of our place in the Universe and no longer were the affairs of humanity considered as the centerpiece of all that was known. In the past century, with the advent of the theories of Special and General Relativity, the Copenhagen interpretation of quantum theory, and a more sophisticated conception of living system dynamics, there has been a new understanding of the central role of the observer or experiencer in the determination of natural phenomena and the actualization of reality. Modern advancements in information theory, semiotics, and consciousness studies have also led to a better comprehension of the relationship between 1st person and 3rd person perspectives and the limits of the Scientific Method. Science and religion have always had the common goal of trying to further our understanding of the world and its meaning for us. This book explores a possible return of science to a role as natural philosophy and a pathway to better understanding our place in the Universe.

Everything you ever wanted to know about the universe - and our place within it - in one mind-expanding and highly accessible book. What happens inside black holes? Is dark matter real? Could we do anything to prevent being wiped out by an approaching asteroid? Will our explorations of our neighboring planets reveal life or a new place to settle? What can observations of stars reveal about our origins - and our future? Professor Andrew Newsam draws on his vast expertise to show us what's going on beyond the limits of our planet, from our solar system to distant galaxies - and what this tells us about our own place in this vast expanse called 'the Universe'. From glowing nebulae to the sweeping majesty of the Milky Way, Everything You Ever Wanted to Know About the Universe will spark your curiosity and help you make sense of the amazing discoveries and fascinating mysteries of the cosmos. "Unpatronizing, direct and comprehensible." --BBC Sky at Night Magazine