The Search for Extraterrestrial Intelligence (SETI)

A bibliography of reports concerning the Search for Extraterrestrial Intelligence is presented. Cosmic evolution, space communication, and technological advances are discussed along with search strategies and search systems

The view from Ranger VII

Ranger VII lunar photographic missio

Back to the Future and Up to the Sky: Legal Implications of ‘Open Skies’ Inspection for Arms Control

The United States, the Soviet Union, and their respective allies are currently engaged in the negotiation of a new arms control agreement on Open Skies, reviving a failed concept from the 1950s. The treaty would permit each country to overfly the others on short notice and with great frequency, and to use diverse, sophisticated sensors to photograph key military and defense-related installations. This type of mutual intelligencegathering arrangement offers great advantages for national security and global stability, reducing the possibility of surprise attack and accordingly mitigating the necessity for maintaining large, offsetting military deployments. At the same time, however, the intrusive inspection powers it contemplates might also conflict with the fourth amendment\u27s prohibitions against warrantless governmental searches conducted inside the United States. In this Article, the author scrutinizes the Open Skies provisions now on the negotiating table and assesses them for constitutionality, applying precedents and principles derived from traditional criminal law. He concludes that an Open Skies treaty could be implemented consistently with fundamental United States jurisprudence, but only with certain limitations, and that the current negotiations finalizing the treaty text ought to take carefully into account the concerns of future reviewing courts

Atmospheric Research 2013 Technical Highlights

Welcome to the Atmospheric Research 2013 Atmospheric Research Highlights report. This report, as before, is intended for a broad audience. Our readers include colleagues within NASA, scientists outside the Agency, science graduate students, and members of the general public. Inside are descriptions of atmospheric research science highlights and summaries of our education and outreach accomplishments for calendar year 2013.This report covers research activities from the Mesoscale Atmospheric Processes Laboratory, the Climate and Radiation Laboratory, the Atmospheric Chemistry and Dynamics Laboratory, and the Wallops Field Support Office under the Office of Deputy Director for Atmospheres (610AT), Earth Sciences Division in the Sciences and Exploration Directorate of NASAs Goddard Space Flight Center

Proceedings of the 3rd World Summit on Exploring the Dark Side of the Universe (EDSU2020): March 9–13, 2020, Guadeloupe Islands

The 3rd World Summit on Exploring the Dark Side of the Universe (EDSU2020) (https://indico.cern.ch/event/801461/overview) took place from March 9 to 13 in the Guadeloupe Islands, a picturesque French archipelago in the Caribbean. This was the 3rd meeting in this series of workshops, with previous editions held in the Galapagos Islands and Guadeloupe. The workshop was attended by 89 participants from 27 countries, including a large number of students. During the entire workshop, more than 60 talks were presented and many discussion sessions were held.These Proceedings contain research presented at the 3rd World Summit on Exploring the Dark Side of the Universe (EDSU2020), one of the major venues of interaction between cosmologists and particle physicists. Topics include Cosmological Microwave Background, Large Scale Structure, Inflation and Early Universe, Particle Astrophysics, Dark Matter and Dark Energy, and Particle Physics

Strategic Culture as the Basis for Military Adaptive Capacity: Overcoming battlefield technological surprises

The ability of a military to respond to environmental changes rather than rigidly adhere to previously defined concepts of operation is paramount to overcoming unforeseen battlefield technological challenges. A force with the greater capacity for learning and adaptation will possess significant advantages in overcoming unforeseen challenges. However, it is unclear as to what determines the flexibility or adaptive capacity of a military during military engagements. To address this issue, this study focuses on intra- war adaptation as a product of a military’s strategic culture in overcoming enemy technological surprises. The work demonstrates the symbiotic relationship between strategic culture and adaptability that ultimately determines how effectively a force will respond to unforeseen battlefield challenges. For this reason, strategic culture is indispensable in explaining why militaries may continue to act in ways that are incongruous with prevailing operational circumstances while others are adept at responding to Clausewitzian fog and friction

Weak Lensing–X-ray Scaling Relations for a High Redshift Galaxy Clusters Sample

Accurate cosmology through large X-ray selected galaxy cluster samples will rely on accurate mass estimates and well-calibrated mass-observable relations. The comparison of independent approaches, such as X-ray and gravitational lensing analysis, yields the most accurate results in tracing the cosmic evolution. This also contributes to improve our understanding of the scaling laws between X-ray luminosity and mass, providing the essential connection between observations and cosmological constraints that will be obtained thanks to the forthcoming eROSITA X-ray space telescope. Our project aims at the mass estimation via the weak lensing follow-up of the cosmological subsample of the 400d Galaxy Cluster Survey: a homogeneous, statistically complete and flux limited X-ray sample of 36 high-redshift (0.35 ≤ z After a brief introduction about cluster cosmology, this thesis presents methods and results of the cluster mass estimation through an homogeneous weak lensing analysis of 18 galaxy clusters. For our purposes we use optical data from archival and granted observations at ground-based instruments: IMACS, WFI and MegaCam wide-field cameras. Given the poor quality of the data format of the IMACS camera, we modify and automatize the THELI data reduction pipeline and implement a method for recovering precious astrometric information. We provide revised scaling relations of weak lensing mass with several X-ray observables integrating the new data with updated masses from the previous works, basing on a total of 25 high-z clusters. We compare our results with the X-ray mass estimates and recent mass comparison projects. We find a hint for a mass-dependent mass bias, with X-ray mass estimates of low-mass clusters (w.r.t. the sample median mass) being biased-high, while they are biased-low at the high-mass end. However, the overall trend is consistent with the zero bias, hence not showing any indication for a strong cluster mass bias which would be needed to alleviate the Planck CMB-cluster tension

Astronautics and aeronautics, 1972

Important events of the U. S. space program during 1972 are recorded in a chronology which encompasses all NASA, NASA related, and international cooperative efforts in aeronautics and astronautics. Personnel and budget concerns are documented, along with the major developments in aircraft research, manned space flight, and interplanetary exploration

Annotating and abstracting the english text

Даний посібник призначений для аспірантів, магістрів і студентів, що бажають навчитися складати англійською мовою анотації і реферати до статей за своєю спеціальністю. Мета посібника – навчити студентів і аспірантів розуміти зміст науково-популярних і технічних текстів і викладати зміст прочитаного у вигляді реферату або анотації. А також навчити їх користуватися лексико-синтаксичними кліше, найбільш характерними для мови певної галузі