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Princeton Series in Astrophysics

Bovy J: Dynamics and Astrophysics of
Galaxies

Dynamics and Astrophysics of Galaxies

<ul><li>1 Introduction</li><li>PART I Basics of galactic dynamics<ul><li>2 Gravitation</li><li>3 Elements of classical mechanics</li><li>4 Orbits in spherical mass distributions</li><li>5 Equilibria of collisionless stellar systems</li><li>6 Masses of spherical stellar systems</li></ul></li><li>PART II Disk galaxies<ul><li>7 Gravitation in galactic disks</li><li>8 The kinematics and dynamics of galactic rotation</li><li>9 Orbits in disks</li><li>10 Equilibria of galactic disks</li><li>11 Chemical evolution in galaxies</li></ul></li><li>PART III Elliptical galaxies<ul><li>12 Gravitation in elliptical galaxies and dark-matter halos</li><li>13 Orbits in triaxial mass distributions and surfaces of section</li><li>14 Equilibria of elliptical galaxies and dark-matter halos</li><li>15 Gravitational lensing</li><li>16 Mass modeling in elliptical galaxies</li></ul></li><li>PART IV Galaxy formation and evolution<ul><li>17 Formation of dark-matter halos</li><li>18 Extragalactic astronomy</li><li>19 Hierarchical galaxy formation</li><li>20 Internal evolution in galaxies</li></ul></li><li>APPENDICES<ul><li>A Coordinate systems</li><li>B Mathematical background</li><li>C The general theory of relativity and galaxies</li></ul></li><li>INDEX</li>
</ul>

You know you have more to offer, but you're tired of waiting for a seat at the table to prove it. Most emerging leaders feel stuck in a holding pattern, believing that their ability to make an impact is capped by their current title or the person above them on the org chart. But influence isn't a reward for a promotion. It's a muscle you build in the mundane, everyday moments of your current role.In 90 Days to Grow Your Influence Clay Scroggins, bestselling author of How to Lead When You're Not in Charge, provides a daily roadmap for the "not-in-charge" leader. Drawing from his foundational work on leveraging influence without authority, this 90-day reader helps you navigate the tension of having great responsibility but very little power.Each day is designed to be a "snackable" but substantial 5-minute read, perfect for your morning coffee or the commute to the office. Through a mix of relatable stories, leadership metaphors, and spiritually grounded reflections, you'll learn how to: <ul><li>Understand Identity: Secure your worth in who you are, not just what you do or what your business card says.</li><li>Lead Yourself: Master the disciplines of self-awareness and emotional intelligence.</li><li>Choose Positivity: Cultivate a resilient, solution-oriented mindset that shifts the energy of every room you enter.</li><li>Think Critically: Stop being a passive observer and start solving problems.</li><li>Reject Passivity: Take ownership of the ground you're standing on today.</li><li>Challenge Well: Influence the leaders above you with relational equity and wisdom.</li></ul>Whether you are a new hire, a middle manager, or an aspiring executive, this book is your daily reminder that your seat on the org chart doesn't define your impact. You have everything you need to start leading right where you are. Real influence starts here.

Daily Habits for Leading from Any Level

90 Days to Grow Your Influence

A Human History of Thirst

The Search for Water

A collection of eye-opening natural experiments, showing how economists uncover cause-and-effect relationships and reveal insights about our world. Does having a daughter change how a congressperson votes? How did a nineteenth-century doctor help discover germs? Is it better to go first or second in a penalty shootout? Why don’t diplomats pay their parking tickets? Do leaders really matter? These are all questions economists ask. Some of these questions are serious, others less consequential. But all are interesting—and can be answered by way of the natural experiment. A natural experiment is an event in the real world that neatly divides people into a treatment and control group—and it is one of the greatest tools in the economist’s toolkit. In Daughters, Diplomats, and Death, Patrick Gourley discusses why and how economists have leveraged this powerful method to answer questions that were long thought unanswerable. In the vein of Freakonomics, Nudge, and The Tipping Point, the book takes the reader on a lively and engaging tour of some of the most fascinating natural experiments, explaining how they work, how they help social scientists answer questions, and what conclusions they reached. The experiments illuminate a wide range of timely issues in health, education, reproductive issues, and the environment, lending rich and much-needed nuance to the complex debates that shape today’s headlines.

How Economists Use Natural Experiments to Decipher Our World

Daughters, Diplomats, and Death

Antibiotics. Invented by microbes. Mined by humans. And now running out.'Combines the passion of Robert Macfarlane with the incisiveness of Patrick Radden Keefe ... Brilliant' Rachel Clarke, Spectator 'This history of scientific discovery and corporate greed chronicles arguably the most significant technological advance of the 20th century ... A lively history and a stark warning' Sunday Times, Best Books of the Year 2025The discovery of antibiotics is one of humanity's greatest achievements, saving millions of lives and changing the world forever.But, unlike other drugs, each time we take antibiotics we use up a finite resource. And now we are running out.This is the spellbinding story of how we learned to harness the fossil fuels of medicine - and an urgent call to adapt, so they can hold a place in our future.'Excellent ... highly readable' Henry Marsh'Brilliant' Tim Spector'Wonderful ... thrilling' Venki Ramakrishnan'An enjoyable and absolutely essential read' Kate Bingham'A fascinating deep dive' Sarah Gilbert'Eye-opening ... a vital call to arms' Matthew Cobb'This book is a triumph' Science

The Extraordinary History of Antibiotics – and How We’re Burning Through Them

Dangerous Miracle

THE INSTANT SUNDAY TIMES &amp; NEW YORK TIMES BESTSELLER 'Steve Brusatte has a rare gift for bringing the distant past vividly and fascinatingly to life' - Bill Bryson 'One of the stars of modern palaeontology' - National Geographic 'An unqualified success from beginning to end' - New Scientist 'An enjoyable tour of evolutionary science' - Financial Times '[This] origin story of birds is exciting . . . natural history writing at its best' - Times Literary Supplement 'A delight . . . unflaggingly fascinating' - The Sunday Times 'A gifted writer . . . Brusatte makes us look anew at these feathered beasts' - The Times, Best Summer Books 'Soaringly brilliant' - Alice Roberts A New Scientist and Times most anticipated book of 2026, from the bestselling author of The Rise and Fall of the Dinosaurs. Billions of birds share the planet with us. With their flamboyant plumage and joyous dawn serenades, many of them are impossible to miss. But how did they get here, how did they break the bounds of Earth and begin to fly, and how does their legacy shape our world? In delightfully energetic prose, expert palaeontologist Steve Brusatte takes us through their 150-million-year history, from their origins among small carnivorous dinosaurs to the 10,000-plus species that thrive today. Along the way, we meet fantastic birds from all around the world, some known only through fossils. There are elephant birds that stand as high as a basketball hoop and lay eggs as big as watermelons; demon ducks that weigh more than cows; aeroplane-sized seabirds that soar the world's thermals; and predatory penguins the size of gorillas. Lively, majestic and full of wonder, The Story of Birds will ensure you never see birds the same way again. 'Steve Brusatte tells the amazing story of birds with enthusiasm and brio' - Henry Gee 'An eye-opening tour into the amazing world of birds' - Venki Ramakrishnan *The Story of Birds was no. 10 on the New York Times Hardcover Nonfiction best seller list for the week ending May 2, 2026.

An Evolutionary History of the Dinosaurs that Live Among Us

The Story of Birds

Halo

"2552. The theocratic military alliance known as the Covenant is showing no mercy as it continues to assault every human world it encounters, but in the way lies humanity's greatest champion, the super-soldier Spartan John-117--the Master Chief. Together with his AI companion Cortana and the last remaining Spartans, the galaxy-spanning fight rages on two fronts following the destruction of the human military stronghold Reach by Covenant forces and the mysterious artificial ringworld known as 'Halo' at the hands of the Master Chief"--Back cover.

Halo: First Strike: Volume 3

Shortlisted for The Wainwright Prize for Conservation Writing 2026 Around the world, birds have been struggling to survive. But the tide is turning. This is a story about optimism. 'A joyful, life-affirming celebration of recovery. We need to hear about these miracles. We need to know we can do it, if we try!' - Isabella Tree, bestselling author of Wilding 'A welcome relief . . . good news stories that rise above the encircling doom' - Literary Review 'Fascinating . . . a reminder of what is being done to save the world's birds - and by doing so, save us' - Stephen Moss, naturalist and bestselling author of Ten Birds That Changed the World Across the world, scientists, conservationists and ordinary people are involved in groundbreaking work to restore billions of lost birds. Together they're tackling the hollowing out of the springtime dawn chorus and the withering away of once-great migration multitudes. From a tiny island off the coast of Maine to the middle of the Pacific Ocean, and from a hereditary estate in England to a watery wilderness in Romania where Ukrainian air-raid sirens scream at night, birds' fortunes are being reversed. In The Return of the Oystercatcher, renowned natural history writer and New York Times bestselling author Scott Weidensaul tells the uplifting story of that success and what it means for us and for our planet, too. Because a world that works for birds, in all their complexity of movement and ecological need, will work for everything else. Including people. Illustrated with 16 pages of colour photographs and maps

Saving Birds to Save the Planet

The Return of the Oystercatcher

In his prize-winning Sunday Times bestseller, An Immense World, Ed Yong invited us to perceive the world through other animals' senses. Now he transforms our view of the world once again by revealing the hidden wonders of life at different scales.'Utterly extraordinary. Yong's spectacular new book is not just a mesmerizing examination of the wonders of life on Earth; it's no less than a biography of life itself' EMILY ST JOHN MANDELAll around us, just beyond our awareness, life proceeds in astonishing ways. The 100-ton blue whale easily crosses oceans, singing to fellow whales thousands of miles away. Alongside it a bacterium swims in a drop of seawater that is as vast for it as an ocean is to the whale. Hummingbirds move too quickly for us to follow, while plants move too languorously for us to perceive.Every living thing operates at its own scale - the blend of size, range, pace, longevity, and influence that define the contours and rhythms of a life. We tend to think of the human scale as life's default. But in Life Beyond Measure, Ed Yong coaxes us outside of our medium-sized, medium-lived, medium-paced, moderately mobile range and introduces us to entirely new worlds, some that could fit between two grains of sand. Fireflies assembling their luminous chorus; a bristlecone pine that's older than paper rounds the corner of its fifth millennium; shorebirds that fly across the world's biggest ocean without stopping; Pando, a forest that may be a single tree; and a host of other dazzling, disorienting entities expand our understanding of what life can be.Mind-bending, exhilarating, and profound, Life Beyond Measure is a call to cast off our human perspective, to lose ourselves in the vastness and strangeness of nature, and by doing so, to discover how intimately connected to the rest of life we are.

Nature’s Hidden Wonders at Every Scale

Life Beyond Measure

'Playful, bold, tender . . . in Glyph we see a major British writer answering the call of the day' Guardian Ghosts don't exist. They don't. End of. Story, however. It is haunting. Everything tells it. It all starts when Petra and her little sister Patch hear a horrifying story from the past and find themselves making up a ghost. Is it imaginary? Is it real? Then it all starts again thirty years later when Petra, now estranged from Patch, finds a phantom horse kicking the furniture to pieces in her bedroom. What to do? She phones her sister. In a chiaroscuro dance through our increasingly antagonistic era, Glyph asks if we're attending to the history that's made us and to the history we're making. A funny, warm and clear-eyed take on where we are now, Glyph is about what our imaginations are for and how, in a broken, brutal and divided time, we rekindle care, solidarity, resistance and openness. This anti-war novel, Ali Smith's most soulful, playful and vital yet, is a work of lightness that goes deep to counter the forces currently flattening the modern world. A standalone novel, it's family to Gliff (2024).

Glyph

In the modern information age, our brain's coping mechanisms have been overloaded, and our irrationality turned up to eleven. Amanda Montell blends cultural criticism and personal narrative to explore our modern cognitive biases and the power, disadvantages and highlights of magical overthinking."Magical thinking" can be broadly defined as the belief that one's internal thoughts can affect unrelated events in the external world. Whether that's "manifesting" their way out of poverty, staving off cancer with positive vibes, or transforming an unhealthy relationship to a glorious one through loyalty alone.In a series of razor sharp and introspective chapters, Montell delves into cognitive biases that run rampant in our brains, from how the "halo effect" cultivates worship (and hatred) of larger-than-life celebrities, to how the "sunk cost fallacy" can keep us in detrimental relationships long after they no longer serve us.Told with her signature brilliance and wit, Montell's prevailing message is one of hope and forgiveness for our anxiety riddled human self. If you have all but lost faith in our ability to reason through the noise of information overload, this book aims to make sense of the senseless. To crack open a window in our minds and let the fresh air in. To help quiet the cacophony for a while, and maybe, even hear a melody in it.

Notes on Modern Irrationality

The Age of Magical Overthinking

Arton Daghdev, Professor der Exobiologie, wird sterben.Wenn nicht auf direkten Befehl des totalitären Regimes der Erde, das ihn ins Exil verbannt hat, dann durch die fremdartige Natur des Gefängnisplaneten Kiln. Zwischen Arbeitslager und einer tödlichen Umwelt, die bei Kontakt den menschlichen Körper für immer verändert, scheint es keine Hoffnung für Arton zu geben.&nbsp;Doch Kiln birgt ein wundersames und schreckliches Geheimnis, das Artons Verständnis von Leben und Intelligenz neu definieren und ihm vielleicht sogar einen Ausweg bieten wird ...&nbsp; 
Lob für 'Der Symbiont':'Nicht mehr aus der Hand zu legen' Stephen Baxter'Hand aufs Herz: Absolut fantastisch' New Scientist&nbsp;'Unermüdlich klug und absolut fesselnd' Daily Mail'Ein perfekter Einstieg in das, was Tchaikovsky so großartig macht' SciFiNow

Roman | Politische SciFi vom Erfolgsautor von »Kinder der Zeit«

Der Symbiont

Instant Top 10 Business Bestseller at WHSmith Top 10 Best Leadership Books of 2025 from LeadershipNow Top 11 Leadership Books of 2025, Next Big Idea Club The Psychology of Leadership offers a revelatory fresh take on business leadership through the lens of groundbreaking research in positive, sports, and personality psychology. Witty, conversational, and personal, The Psychology of Leadership blends research, fascinating true stories, humor, and self-improvement advice to deliver simple yet powerful principles to master the mental game of leadership. Leaders will develop what feels like mind-reading abilities for interpreting workplace personalities, hidden motivations, and group dynamics. They will learn how to: - Inspire their organization to move mountains. - Improve their ability to listen, communicate and, when necessary, persuade. - Dramatically improve their own mindset and resilience. Now part of the Harriman House Essentials Collection, a series showcasing the very best of business and finance books.

Harriman House Essentials

The Psychology of Leadership

Dynamics and Astrophysics of Galaxies

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