eBooks de Astronomía. Astrofísica, página 2 de 21

A Terra é excepcional? é uma fascinante jornada científica sobre as origens da vida e a possibilidade dela ser encontrada fora do nosso planeta, escrita por um astrofísico bestseller e um biólogo laureado pelo Nobel. Por muito tempo, cientistas se perguntaram como a vida pode ter emergido da quimica inanimada, ou se ela existe apenas na Terra. Charles Darwin especulou no seculo XIX sobre a vida como conhecemos ter começado em um lago morno. Alguns de seus contemporaneos acreditavam que havia vida em Marte. A epoca, parecia inevitavel que, a essa altura, ja teriamos essas respostas, o que ainda no aconteceu.No entanto, como o astrofisico Mario Livio e o biologo molecular e ganhador do Nobel Jack Szostak revelam neste livro, o veu que ainda encobre esta questo esta finalmente sendo levantado. Baseando-se em descobertas recentes, os autores explicam como os blocos fundamentais da vida como o RNA, os aminoacidos e as celulas poderiam ter surgido do caos primordial do planeta. Alem disso, discutem de forma multidisciplinar a busca por vida alem da Terra, considerando tanto formas que conhecemos como possiveis variaçes.Seria a vida o resultado de um acidente ou um imperativo quimico? A Terra e excepcional? e uma reflexo profunda sobre a origem e o destino da vida no universo, escrita por dois dos principais pensadores sobre este tema na atualidade."A situaço mudou drasticamente nas ultimas tres decadas. As tentativas de responder a essas exatas perguntas Como começou a vida na Terra? Estamos sozinhos na Via Lactea? tornaram-se duas das fronteiras mais vibrantes e dinamicas da investigaço cientifica.Notavelmente, as respostas para essas questes dependem de uma terceira pergunta, que e relativamente simples de formular, certamente bem definida e sem duvida possivel de responder (pelo menos em principio): qual e a probabilidade de surgir vida na superficie de um planeta potencialmente habitavel?"

Tudo o que você achava saber sobre Marte vai desmoronar. E o que descobrirá neste livro pode mudar sua visão do universo — e de si mesmo — para sempre."A vida no planeta Marte e os discos voadores" n

Desde os primórdios da humanidade, o céu noturno foi uma janela para o desconhecido. Entre as inúmeras estrelas que pontilham o firmamento, há uma constelação de sete sóis, mencionada nas escrituras

In "Aether and Gravitation," William George Hooper embarks on a rigorous exploration of the interplay between two foundational concepts in physics: aether and gravitation. Written in a style that marries clarity with intellectual rigor, Hooper delves into the scientific theories of the late 19th and early 20th centuries, contextualizing his arguments within the broader landscape of contemporary scientific thought. The book intricately weaves historical perspectives with mathematical formulations, offering a cohesive narrative that seeks to reconcile the emerging theories of relativity with the traditional notions of aether, setting the stage for future inquiry in theoretical physics. William George Hooper, a scholar with a keen interest in the philosophical implications of scientific principles, draws upon his multidisciplinary background in physics and philosophy in crafting this work. His experiences navigating through the tumultuous shifts in scientific paradigms during his era greatly influence the depth and breadth of his analyses. Hoopers commitment to understanding the underpinnings of scientific theories showcases his desire to bridge the gap between abstract concepts and their tangible implications in the natural world. For readers who are passionate about the evolution of scientific thought and eager to grasp the complexities of physical theories, "Aether and Gravitation" serves as a crucial text. It not only enlightens readers about the historical disputes surrounding aether and gravitation but also encourages them to ponder the philosophical ramifications of these concepts, making it an indispensable addition to the library of any discerning scholar.

In "Aether and Gravitation," William George Hooper delves into the intricate relationship between gravitational forces and the underlying aether theories that once dominated 19th-century physics. Utilizing a combination of empirical observations and theoretical exploration, Hooper articulates a complex yet engaging narrative that challenges prevailing notions of gravitation while invoking the classical scientific debates of his time. His literary style is marked by clarity and precision, laden with philosophical undertones that provoke critical reflection on the nature of physical realities, positioning the work at the intersection of science and metaphysics. William George Hooper, a lesser-known figure in the scientific community, was deeply influenced by the revolutionary ideas of his contemporaries, including those of Einstein and Newton. His rigorous academic background in physics and philosophy fostered a keen interest in the unresolved questions surrounding the aether concept which propelled his inquiry into gravitational theory. Through extensive research and a passion for uncovering the nuances of physical phenomena, Hooper emerged as an advocate for reevaluating established scientific paradigms, which inspired the themes present in this text. Readers intrigued by the evolution of modern physics should not overlook "Aether and Gravitation." Hoopers work invites an inquisitive exploration of foundational concepts that have shaped our understanding of the universe. This book serves not only as a historical exploration but as a thought-provoking platform for contemporary discussions, making it essential for scholars and enthusiasts alike.In this enriched edition, we have carefully created added value for your reading experience:- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

Stephen Hawking described it as the discovery of the century, if not of all time, yet the scientists who first detected the cosmic radiation that was identified as the afterglow of the big bang had to admit that it was more by accident than intention. At first its discoverers mistook the readings for the disruption caused by the droppings of pigeons that had nested in their telescope, and yet they went on to win the Nobel prize. In the mid-1990s New Scientist writer Marcus Chown drove across America to interview the key scientists who had made this astonishing discovery. Their account and Chowns description of their achievement was published to much acclaim. But now, over a decade later, in this new and fully revised edition he goes behind the hype and the hysteria to provide a clear and lively explanation of one of the biggest discoveries in modern science - and a brilliant picture of what happened next.

"Durante treinta años –nos dice Kip S. Thorne, profesor del California Institute of Tecnology- he participado en una gran búsqueda para comprender el legado dejado por Albert Einstein a las generacio

Siempre está encima de nosotros y por eso parece que lo sabemos todo sobre él, pero el cielo encierra un tesoro escondido: el secreto del tiempo y el principio de todo. Mirar hacia arriba en busca de estrellas y planetas se convierte asi en un viaje increible en busca de los limites del Universo hasta llegar al Big Bang, la explosion que dio origen a todo. Su destello de luz ha llegado hasta nosotros como una voz del pasado. Escuchandola, descubriremos que estamos hechos del mismo material del que estan hechas las estrellas, que nacen, brillan y mueren, como nosotros.En este increible viaje nos sorprenderan explosiones de colores, seremos testigos de abrazos galacticos y del nacimiento de nuevos cuerpos celestes, y exploraremos de cerca los misterios de los agujeros negros, que devoran todo a su alrededor: luz, tiempo y materia.Iluminados por las ilustraciones de Alice Beniero y las poesias de Silvia Vecchini, los textos corren a cargo de seis apasionadas astrofisicas que nos acompañaran en el descubrimiento del universo, esclareciendo de un modo ameno los conceptos mas complejos. Aventurarse en el espacio con ellas es una invitacion a abrir los ojos al cielo y a dejarse cautivar por las maravillas que se esconden alla arriba.

Sinopse Zoe é uma jovem com um sonho que vai além dos limites da Terra. Desde criança, ela sempre olhou para as estrelas com admiração e curiosidade. Seu amor pelo espaço sideral a impulsiona a se to

In "An Original Theory or New Hypothesis of the Universe," Thomas Wright presents an innovative exploration of the cosmos, proposing a revolutionary understanding of its structure and the nature of celestial bodies. Wright intricately weaves together empirical observations and theoretical musings, employing a philosophical lens to question established astronomical principles of the 18th century. His literary style oscillates between the poetic and the scientific, reflecting the Enlightenments burgeoning curiosity and the clash between faith and reason. By positioning the universe as a vast, dynamic entity, Wright challenges the static models of his predecessors, breathing life into celestial phenomena and engaging readers in profound cosmic contemplation. Thomas Wright, a noted astronomer and philosopher, found inspiration in the scientific fervor of his time, drawing upon the works of contemporaries like Newton and Halley, while also appreciating the limitations of their theories. His background in natural philosophy and his commitment to blending empirical evidence with metaphysical inquiry inform his approach, leading him to propose an expansive and more interconnected view of the universe that catalyzed future astronomical discourse. Wrights unique perspective not only reflects the zeitgeist of his epoch but also showcases his intellectual bravery in exploring uncharted territories of thought. This groundbreaking work is highly recommended for anyone interested in the evolution of astronomical thought, as well as those who appreciate the intersection of science and philosophy. Wrights theory challenges readers to reconsider the nature of the universe, inviting them into a captivating dialogue with the cosmos. With its rich historical context and forward-thinking hypotheses, this book remains pertinent for modern scholars and enthusiasts eager to understand the foundations of cosmic inquiry.In this enriched edition, we have carefully created added value for your reading experience:- A succinct Introduction situates the works timeless appeal and themes.- The Synopsis outlines the central plot, highlighting key developments without spoiling critical twists.- A detailed Historical Context immerses you in the eras events and influences that shaped the writing.- A thorough Analysis dissects symbols, motifs, and character arcs to unearth underlying meanings.- Reflection questions prompt you to engage personally with the works messages, connecting them to modern life.- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

Una revolucionaria teoría sobre el origen del universo y qué pasó antes del Big Bang.En su conocida obra Historia del tiempo, Stephen Hawking afirmaba que preguntar qué había antes del origen del universo es tan absurdo como preguntar que hay al norte del polo Norte. Desde Einstein, el Big Bang era la ultima frontera que ningun fisico se atrevia a cruzar. Incluso para la teoria general de la relatividad ese punto ha sido considerado una singularidad que no se puede calcular y cuyas reglas fisicas no estan definidas. Es el punto en que comienza para nosotros el universo.Pese a todo ello, seguimos haciendonos las mismas preguntas: ¿Que habia antes del Big Bang? ¿Como nacio el universo? El joven fisico Martin Bojowald da respuesta graficamente y sin formulas. Sus asombrosos descubrimientos sobre un mundo desconocido y emocionante, con tiempo negativo, inversion de la orientacion espacial y un cosmos que se contrae para expandirse despues del Big Bang actualizan viejos modelos cosmologicos sobre los ciclos de expansion y colapso del universo.Reseña: Bojowald consigue lo que Einstein y sus sucesores no consiguieron: llegar al punto temporal cero. Wissenschaft im Brennpunkt

La presente selección de lecturas tiene por objetivo contribuir a la formación de los alumnos que cursan materias relacionadas como Física y temas selectos de ciencia, en los que la astronomía desempeña un papel fundamental para comprender las teorias actuales sobre el origen del Universo, la evolucion de las galaxias y estrellas, los hoyos negros y los cuasares, como es nuestro Sistema Solar y como trabajan los astronomos. La astronomia es una de las disciplinas mas antiguas en Mexico. Nuestros antepasados mayas ya estudiaban la posicion de los astros en la boveda celeste e incluso midieron lo que tarda Venus en volver a la misma posicion en el cielo. Fueron capaces de calcular con gran precision la duracion del año solar, orientaban sus templos respecto a los solsticios y equinoccios y predijeron eclipses de Sol y Luna.

The Apollo Program is the most famous and celebrated in American history, but the first successful landing of men on the Moon during Apollo 11 had complicated roots dating back over a decade, and it also involved one of NASAs most infamous tragedies. From 1959-1963, the United States worked toward putting satellites and humans into orbit via the Mercury program, but Eisenhowers administration was already designing plans for the Apollo program by 1960, a year before the first Russian orbited the Earth and two years before John Glenn became the first American to orbit the Earth. This book takes you on a journey through Armstrongs early life, his passion for aviation, and his historic role in the Apollo 11 mission. Discover the challenges, triumphs, and the momentous steps that led to the unforgettable phrase: Perfect for space enthusiasts, history buffs, and anyone fascinated by human achievement. The book focuses on a moon-based infrastructure to sustain life and to be able to live on the moon. The book also showed older traditional techniques that sailors used in the past on earth and the astronauts used during the Apollo missions. But for a sustainable moon-based society, a moon-based navigational infrastructure is a must to have and to navigate on the moon.

En julio de 2019 se cumplen 50 años de la misión del Apolo 11, cuyo objetivo fue lograr que un ser humano caminara sobre la superficie de la Luna. En esta obra, Eduardo García Llama –ingeniero que tr

¿Le atrae el cielo nocturno? ¿Le gustaría observarlo, a simple vista o con telescopio, pero no sabe por dónde empezar? Este es el libro de astronomía que estaba buscando. Cien temas diferentes, cien ejercicios practicos para convertirse en un astronomo experto. Observe el cielo a simple vista, con prismaticos, con telescopios, con camaras CCD? No habra mas secretos para usted. Aprenda a distinguir los planetas de las estrellas, a encontrar la estrella Polar, como se apunta y enfoca un telescopio, que telescopio le conviene mas, como fotografiar una galaxia. Un libro para la gente que empieza a mirar el cielo, pero con el que puede hacer todo el recorrido. Aprenda paso a paso, empezando por lo mas basico y acabando con la construccion de un observatorio astronomico. Jordi Lopesino es astronomo amateur y lleva mas de veinte años practicando astronomia y escribiendo libros y articulos sobre el cielo. Tiene un observatorio en la terraza de su casa y colabora activamente con el Minor Planet Center (MPC) y el Exoplanet Transit Database (ETD). Los capitulos de este libro estan basados en su experiencia como observador astronomico. Jordi Lopesino es astronomo amateur y lleva mas de veinte años practicando astronomia y escribiendo libros y articulos sobre el cielo. Tiene un observatorio en la terraza de su casa y colabora activamente con el Minor Planet Center (MPC) y el Explanet Transit Database (ETD). Los capitulos de este libro estan basados en su experiencia como observador astronomico.

In "Are the Planets Inhabited?", E. Walter Maunder presents a meticulously researched exploration of the possibility of extraterrestrial life within our solar system. Published in 1902, this thought-provoking work blends scientific inquiry with an engaging narrative style, reflecting the nascent stage of astrophysical understanding at the turn of the 20th century. Maunder, a prominent astronomer known for his contributions to solar research, examines the planets through the lens of contemporary scientific knowledge, speculating on their potential to support life and highlighting the various cosmic phenomena that could influence habitability. His work engages with existing scientific debates, marking a significant literary moment in the intersection of science fiction and scientific inquiry during the late Victorian era. E. Walter Maunder was an esteemed figure in the field of astronomy, recognized for his work on sunspots and solar cycles. His deep fascination with celestial bodies and their potential for life is reflected in this book, which draws upon both his scientific expertise and his passion for uncovering the mysteries of the universe. Maunders scholarly background and position within the Royal Observatory lend credibility to his speculations, allowing the reader to appreciate the earnestness with which he pursued this timeless question. I highly recommend "Are the Planets Inhabited?" to readers interested in the history of astrobiology and the evolution of space exploration discussions. Maunders ability to weave scientific rigor with captivating speculation makes this work not only an important historical document but also a delightful read for anyone curious about the cosmos. Whether you are an astronomy aficionado or a casual reader, this book promises to ignite your imagination about the life beyond our planet.

Em um mundo beirando o abismo, Arturo emerge como um farol de esperança. Determinado a salvar a humanidade e o planeta Terra da iminente destruição, Arturo embarca em uma jornada fantástica, impulsio

Um Tratado de Revelações que envolvem o Criador através de povos e culturas diferentes, onde permutações de sua Personalidade tecem os fios de uma única fonte. Abordando a Temática divina no conceito

A lo largo de la historia la Tierra y la Luna han sido bombardeados por asteroides, los impactos dejaron dramáticas evidencias en forma de cráteres. Cada día más de 100 toneladas de meteoros bombardean la Tierra. Aunque la gran mayoria de estos objetos se desintegran antes de llegar a la superficie del planeta, los objetos mayores a 100 metros pueden sobrevivir al descenso, golpear el suelo, y causar destruccion dentro y alrededor del lugar del impacto. Los objetos mas pequeños que entran en la atmosfera de la Tierra se desintegran antes de llegar a la superficie, aun asi pueden causar daños importantes. El 15 de febrero de 2013 un meteoro de 18 metros exploto a 14,5 millas sobre la ciudad de Chelyabinsk, Rusia, con la fuerza de 30 bombas atomicas, rompio ventanas, destruyo edificios e hirio a mas de mil personas regando fragmentos a lo largo de su trayectoria. Investigaciones recientes sugieren que los eventos del tipo de Chelyabinsk ocurren cada 30 a 40 años con una mayor probabilidad de impacto en el oceano que en areas pobladas.La probabilidad de que un meteoro de 1 kilometro o mas golpee la Tierra es extremadamente remota, si sucediera las consecuencias de tal impacto serian graves. El 31 de mayo de 2013, un asteroide masivo de 2,7 kilometros de diametro paso a 5,8 millones de kilometros de la Tierra, aproximadamente 15 veces la distancia de la Tierra a la Luna. Si un objeto de este tamaño hubiera golpeado la Tierra, los escombros resultantes probablemente habrian contaminado la atmosfera terrestre, causando una obstruccion parcial de la luz solar, lluvia acida y tormentas de fuego. Sospechan los cientificos que un meteorito de 10 kilometros de ancho golpeo la peninsula de Yucatan en Mexico hace unos 66 millones de años, quizas contribuyo a la extincion de los dinosaurios.Este libro de facil lectura esta escrito para todo publico. El autor lo recomienda para estudiantes del secundario por la simplicidad del lenguaje y tambien para estudiantes universitarios debido a la informacion actualizada que contiene respecto a los adelantos espaciales. Es ideal como complemento para los cursos de ciencia.