Summarizes some thoughts of Stephen W. Hawking who proposes that certain kinds of communications across the event horizon are possible, that they lead to the evaporation or explosion of the black hole, and, therefore, that classical or quantum mechanical causality has no meaning. (GS)

After a brief discussion of the history of mathematical astronomy, the author introduces problems concerning aspects and distances of the planets. The problems presented can be solved without use of trigonometry. (SD)

Describes distinctive features that create strong student involvement in astronomical measurement and observation. Presents specific examples of the approach and provides an outline of the entire course. (Author/GS)

Some general information on stars is provided in this National Aeronautics and Space Administration pamphlet. Topic areas briefly discussed are: (1) the birth of a star; (2) main sequence stars; (3) red giants; (4) white dwarfs; (5) neutron stars; (6) supernovae; (7) pulsars; and (8) black holes. (JN)

Discussed is a science project in which secondary school physics students constructed a radio telescope to use in the study of radio astronomy. (PEB)

Described is an astronomy program at Moorhead State College (Minnesota) for liberal arts students. Facilities and equipment and factors related to the program's success are discussed. Suggestions to others who may want to develop such programs are given. (Author/RH)

This bibliography, intended for the general reader, provides selective coverage of the unidentified flying object (UFO) literature that has appeared since 1969. The coverage is limited to English language works, but does include translations and materials published abroad. Other bibliographies are listed, as are books, congressional and other…

Presents a brief description, including dates and estimated time of appearance, of a total eclipse of the moon. Suggested details for observing, requiring little or no experience or equipment, are presented. (EB)

Included are seven booklets, part of a series published on the occasion of the tenth anniversary of the National Aeronautics and Space Administration (NASA). The publications are intended as overviews of some important activities, programs, and events of NASA. They are written for the layman and cover several science disciplines. Each booklet…

The current status of the National Information System for Physics and Astronomy which is being implemented by the information Division of the American Institute of Physics is reported in this issue of a series of annual reports on the program. The goals of the system, their relative priorities and the over-all strategy by which they are to be…

This teacher's guide provides background information, curriculum source materials, and suggested class activities for class discussion and study. Information related to the discovery of the comet is presented as well as photographic and schematic pictures showing the sky through which the comet travels. Historical data regarding comets of the past…

Compiled in this reference work are bibliographic citations for books and articles dealing with the earth and environmental studies. Specific categories are geology, oceanography, meteorology, and astronomy. Items are indexed only by title but information about author, source, and date of publication is also noted. (BL)

The pamphlet "Skylab" describes very generally the kinds of activities to be conducted with the Skylab, America's first manned space station. "Space Shuttle" is a pamphlet which briefly states the benefits of the Space Shuttle, and a concise review of present and future benefits of space activities is presented in the pamphlet "Space Benefits…

The Apollo 16 guidebook describes and illustrates (with artist concepts) the physical appearance of the lunar region visited. Maps show the planned traverses (trips on the lunar surface via Lunar Rover); the plans for scientific experiments are described in depth; and timelines for all activities are included. A section on "The Crew" is…