“…Theoretical–computational studies together with recent astronomical observations have shown that under extreme conditions in the interstellar medium (ISM), complexes of noble gases may be formed. …”
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“…The decline in productivity coincided with a prolonged period of low orbital eccentricity and a shift towards lower-amplitude obliquity, an astronomical configuration linked to reduced East Asian Monsoon intensity and decreased riverine nutrient supply.…”
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“…As the founding director of the Kavli Institute for Astronomy and Astrophysics at Peking University, Lin offers his insights on how China's astronomical community can benefit more from collaboration, and what young scientists could do to seize the opportunities offered by what he calls ‘a golden era of exoplanet research’.…”
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“…More interestingly, 2-azabutadiene can be used to proxy the abundance of interstellar butadiene. To enable future astronomical searches, the rotational spectrum of 2-azabutadiene has been investigated up to 330 GHz. …”
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“…By combining molecular beam mass-selective IR spectroscopy and calculated IR spectra, we analyze the discharge of benzene and identify resulting products including larger PAHs, radicals and intermediates that serve as promising candidates for radio astronomical searches. The identification of various reaction products indicates that different gas-phase reaction mechanisms leading to PAH growth must occur under the same conditions to account for all observed PAH-related species, thereby revealing the complex and interconnected network of PAH formation pathways. …”
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“…Because of the lack of laboratory data, it is yet to be identified in spectrally resolved astronomic observations. As a benchmark for computational predictions and to guide an experimental search for the ro-vibrational lines of FeH(+), we performed infrared multiple photon dissociation (IRMPD) spectroscopy of FeH(+) tagged with two argon atoms. …”
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“…Due to its microscopic nature at astronomical distances and stringent requirements in laboratory experiments, SMRI has remained unconfirmed since its proposal, despite its astrophysical importance. …”
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“…However, taking a longer view and considering the eventual destruction of the biosphere by astronomical processes, we argue that humans, a species with considerable technological know-how and industrial capacity could intervene to extend the lifespan of Earth’s biosphere, perhaps by several billion years. …”
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“…The coupling constant limits are established to be [Formula: see text] and [Formula: see text] , which are more than one order of magnitude tighter than astronomical and cosmological limits on the coupling between the new gauge boson such as Z’ and standard model particles.…”
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“…Rien, pourtant, ne semblait à l'origine militer pour un tel déploiement de moyens scientifiques: la comète ne dépasse pas en éclat les comètes non périodiques les plus brillantes; sa période de révolution _ 76 ans _ est longue; sa trajectoire est telle que le temps d'observation, lors du survol par les sondes, ne dure que quelques heures.Mais la comète de Halley _ du nom de l'astronome anglais Edmund Halley qui, appliquant les lois de la gravitation de Newton, en détermina les éléments orbitaux et prévit la réapparition de 1758 _ est la seule comète brillante et jeune dont la trajectoire soit parfaitement connue à l'avance. …”
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“…--HTML-->Fifty years ago, two astronomers, R. Hanbury Brown and R. Q. Twiss, invented a new method to measure the angular diameter of stars, in spite of the atmospheric fluctuations. …”
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“…The book comprises four complementary parts, written by leading experts in the field, constituting a genuine textbook about gravitational lensing: • Peter Schneider – Part 1: Introduction to Gravitational Lensing and Cosmology • Christopher Kochanek – Part 2: Strong Gravitational Lensing • Peter Schneider – Part 3: Weak Gravitational Lensing • Joachim Wambsganss – Part 4: Gravitational Microlensing Students and researchers alike will benefit from this comprehensive presentation of the astrophysical and astronomical aspects of gravitational lensing.…”
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“…The volume includes African myths and legends about the sky, alignments to celestial bodies found at archaeological sites and at places of worship, rock art with celestial imagery, and scientific thinking revealed in local astronomy traditions including ethnomathematics and the creation of calendars. Authors include astronomers Kim Malville, Johnson Urama, and Thebe Medupe; archaeologist Felix Chami, and geographer Michael Bonine, and many new authors. …”
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“…As humans we are more intimately linked with our life-sustaining Sun than with any other astronomical object, and the new edition therefore provides modern interpretations of ozone depletion and global warming that are related to both the Sun and to human activities. …”
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“…This book is addressed to professional astronomers and their students.…”
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“…It is an essential resource on the evolution of solar observations and will be of interest to students and researchers in solar physics, as well as astronomers and historians of science.…”
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“…This is a fascinating account, not only for astronomers at every level but also for readers of popular science. …”
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“…The book reviews an enormous and growing body of literature on the cultures of the ancient Mediterranean, the Far East, and the New World (particularly Mesoamerica), putting the ancient astronomical materials into their archaeological and cultural contexts. …”
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“…Since no higher mathematical or physics expertise is required, the book is also suitable for college and university students at the beginning of their studies. Hobby astronomers and other science enthusiasts seeking a deeper insight than can be found in popular treatments will also appreciate this unique book.…”
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“…The text of this Second Edition is enriched with 263 photographs, 91 in color, showing images from actual antiquarian celestial books and atlases, each one with an explanation of its astronomical and cartographic features. This new edition of Star Maps: History, Artistry, and Cartography includes: - over 50 new pages of text and 44 new images (16 in color) - completely new sections on celestial frontispieces, deep-sky objects, playing card maps, additional cartographers, and modern computerized star maps - updated figures and text about celestial globes, volvelles, telescopes, and planets and asteroids - revised and updated text and illustrations throughout. …”
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