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HUD-space-science-veterans Appropriations for 1973

HUD-space-science-veterans Appropriations for 1973 PDF Author: United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Space-Science-Veterans
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1962

Book Description


HUD-space-science-veterans Appropriations for 1973

HUD-space-science-veterans Appropriations for 1973 PDF Author: United States. Congress. House. Committee on Appropriations. Subcommittee on HUD-Space-Science-Veterans
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1962

Book Description


Astronomy For Dummies

Astronomy For Dummies PDF Author: Stephen P. Maran
Publisher: John Wiley & Sons
ISBN: 1119374413
Category : Science
Languages : en
Pages : 384

Book Description
Your updated guide to exploring the night sky Do you know the difference between a red giant and a white dwarf? From asteroids to black holes, this easy-to-understand guide takes you on a grand tour of the universe. Featuring updated star maps, charts, and an insert with gorgeous full-color photographs, Astronomy For Dummies provides an easy-to-follow introduction to exploring the night sky. Plus, this new edition also comes with chapter quizzes online to help your understanding. For as long as people have been walking the earth, those people have looked up into the night sky and wondered about the nature of the cosmos. Without the benefit of science to provide answers, they relied on myth and superstition to help them make sense of what they saw. Lucky for us, we live at a time when regular folks, equipped with nothing more than their naked eyes, can look up into the night sky and gain admittance to infinite wonders. If you know what to look for, you can make out planets, stars, galaxies, and even galactic clusters comprising hundreds of millions of stars and spanning millions of light-years. Whether you're an amateur astronomer, space enthusiast, or enrolled in a first year astronomy course, Astronomy For Dummies gives you a reason to look into the heavens. Includes updated schedules of coming eclipses of the Sun and Moon and a revised planetary appendix Covers recent discoveries in space, such as water on the Moon and Pluto's demotion from "planet" status Collects new websites, lists of telescope motels, sky-watching guides, and suggestions for beginner's telescopes and suppliers Provides free online access to chapter quizzes to help you understand the content Ever wonder what's out there in the big ol' universe? This is the book for you!

One of Ten Billion Earths

One of Ten Billion Earths PDF Author: Karel Schrijver
Publisher: Oxford University Press
ISBN: 0192560212
Category : Science
Languages : en
Pages : 448

Book Description
Illustrated with breathtaking images of the Solar System and of the Universe around it, this book explores how the discoveries within the Solar System and of exoplanets far beyond it come together to help us understand the habitability of Earth, and how these findings guide the search for exoplanets that could support life. The author highlights how, within two decades of the discovery of the first planets outside the Solar System in the 1990s, scientists concluded that planets are so common that most stars are orbited by them. The lives of exoplanets and their stars, as of our Solar System and its Sun, are inextricably interwoven. Stars are the seeds around which planets form, and they provide light and warmth for as long as they shine. At the end of their lives, stars expel massive amounts of newly forged elements into deep space, and that ejected material is incorporated into subsequent generations of planets. How do we learn about these distant worlds? What does the exploration of other planets tell us about Earth? Can we find out what the distant future may have in store for us? What do we know about exoworlds and starbirth, and where do migrating hot Jupiters, polluted white dwarfs, and free-roaming nomad planets fit in? And what does all that have to do with the habitability of Earth, the possibility of finding extraterrestrial life, and the operation of the globe-spanning network of the sciences?

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1280

Book Description


Looking for Earths

Looking for Earths PDF Author: Alan Boss
Publisher: Wiley
ISBN: 9780471379119
Category : Science
Languages : en
Pages : 264

Book Description
The ultimate insider's account of astronomy's fantastic voyage in search of brave new worlds in faraway galaxies "Highly recommended." -Science and Technology "Full of humor, heartbreak, and a deep understanding of the ardor and luck that compose years of research. . . . The reader becomes not merely a receiver of Boss's vision, but a fellow explorer." -Astronomy "A rewarding account." -Scientific American Are we alone in the universe . . . or are there other planets generating and sustaining life? The question may be as old as civilization, but in the twilight of a century marked by countless frustrated quests to find other solar systems, several teams of pioneering astronomers have at last discovered a rich crop of mammoth, Jupiter-sized gas planets -the first compelling evidence that there may indeed be life in other galaxies. In Looking for Earths, a prominent planetary scientist takes us along on this thrilling hunt for new life, revealing the behind-the-scenes stories of scientific determination, frustration, and triumph. Ushering us to the mountaintop observatories that house the world's most powerful telescopes, and into the tension-filled scientific meetings where new results are announced and old results overturned, Alan Boss brings the process of exploration vividly alive. Experience the roller-coaster ride as intricate observations of minuscule stellar wobbles raise hopes that at last a true planet has been found, only to be almost immediately shattered by more powerful observations. Boss also introduces the principal players whose dreams defied all odds and made the first major discovery possible. Like no other book, Looking for Earths captures the lively tension between theory and observation that defines cutting-edge astronomical discovery, along with the heated battles that will determine the direction of big-ticket American astronomy for years to come. "You will find no better introduction to one of the truly revolutionary developments in modern astronomy."-Natural History

Lasers and Excited States of Rare Earths

Lasers and Excited States of Rare Earths PDF Author: Renata Reisfeld
Publisher: Springer Science & Business Media
ISBN: 3642666965
Category : Science
Languages : en
Pages : 235

Book Description
The possibility of stimulated light emission was discussed by Einstein in 1917, eight years before the quantum-mechanical description of energy levels of many-electron systems. Though it is imperative to use samples having optical properties greatly different from the stan dard continuous spectrum of opaque objects ("black body" radia tion) it is not always necessary to restrict the study to monatomic entities. Thus, spectral lines can be obtained (in absorption and in emission) from lanthanide compounds, containing from one to thir teen 4f electrons going from trivalent cerium to ytterbium, that are nearly as sharp as the ones from gaseous atoms. However, the presence of adjacent atoms modifies the simple picture of an isolated electron configuration, and in particular, it is possible to pump excited levels efficiently by energy transfer from species with intense absorption bands, such as the inter-shell transitions of other lanthanides and of thallium(I), lead(II) and bismuth(III) or the electron transfer bands of the uranyl ion or other complexes. On the other hand, it is possible to diminuish the mUlti-phonon relaxation (competing with sharp line luminescence) by selecting vitreous or crystalline materials with low phonon energies. Obviously, one cannot circumvent the conservation of energy by lasers, but they may have unprecedented consequences for the future by allowing nuclear fusion of light elements, effects of non-linear optics and time-resolved spectroscopy, besides the more conventional applications of coherent light beams with negligible angular extension.

New Frontiers in Stellar Interferometry

New Frontiers in Stellar Interferometry PDF Author:
Publisher:
ISBN:
Category : Astronomical instruments
Languages : en
Pages : 684

Book Description


Nuclear Science Abstracts

Nuclear Science Abstracts PDF Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 724

Book Description


Exoplanets

Exoplanets PDF Author: Sara Seager
Publisher: University of Arizona Press
ISBN: 0816529450
Category : Science
Languages : en
Pages : 545

Book Description
For the first time in human history, we know for certain the existence of planets around other stars. Now the fastest-growing field in space science, the time is right for this fundamental source book on the topic which will lay the foundation for its continued growth. Exoplanets serves as both an introduction for the non-specialist and a foundation for the techniques and equations used in exoplanet observation by those dedicated to the field.

Hearings, Reports and Prints of the House Committee on Appropriations

Hearings, Reports and Prints of the House Committee on Appropriations PDF Author: United States. Congress. House. Committee on Appropriations
Publisher:
ISBN:
Category : Finance, Public
Languages : en
Pages : 1982

Book Description