Discusses major developments in radioastronomy since 1945. Topics include proposed facilities, very-long-baseline interferometric array, millimeter-wave telescope, submillimeter-wave telescope, and funding for radioastronomy facilities and projects. (JN)

Many telescopes are equipped with devices called "setting circles" to locate objects in the sky. However, use of setting circles involves a series of tedious calculations using tables found in handbooks. The computer program provided for Apple II/IIe performs these calculations quickly without use of handbooks. Complete program listing…

Describes solar phenomena which can be identified and recorded by junior high school students. These include monitoring sunspot cycles, measuring sunspot velocity, calculating sunspot numbers, and calculating time. Methods to accomplish these activities (including projection method using telescope) are also described. (JN)

The second of two parts (part 1 in v20 n4, p222, Apr 1982) focuses on experimental techniques used to study cosmic-ray isotopic composition, experimental results, and comparison between cosmic-ray source matter and solar-system material. Several models for nucleosynthesis and evolution of cosmic-source matter are also discussed. (Author/JN)

"Planetary Motion Simulations" is a system of programs designed for students to observe motions of a superior planet (one whose orbit lies outside the orbit of the earth). Programs run on the Apple II microcomputer and employ high-resolution graphics to present the motions of Saturn. (Author/JN)

Techniques have been described for using celestial spheres as data-generating devices. Descibes a variation, capitalizing on students' interest in activities related to Stonehenge. Following a movie, students determine whether or not astronomical alignments found at Stonehenge and related structures could arise by chance. Local buildings are used.…

Proposes a new origin for comets in the solar system, namely, that comets originated in the breakup of a body orbiting the sun in or near the present location of the asteroid belt in the relatively recent past. Predictions related to the theory are discussed. (Author/JN)

Details of the services offered by a school planetarium in upstate New York are provided. The use of computers includes a full-day simulation of a voyage to Mars and back, the finding of great-circle distances, and deriving sunrise and sunset times, moon positions, and eclipse seasons. (MP)

Designed for first-time telescope purchasers, provides information on how a telescope works; major telescope types (refractors, reflectors, compound telescopes); tripod, pier, altazimuth, and equatorial mounts; selecting a telescope; visiting an astronomy club; applications/limitations of telescope use; and tips on buying a telescope. Includes a…

Describes an exercise, suitable for use on programmable calculators or microcomputers, to calculate some of the rapidly processing orbits of a mass M near a static black hole star of mass M. (SK)

Presents a description of the world's largest radio/radar antenna, the Areciba Observatory in Puerto Rico. Activities at the observatory are discussed as well as the scientific research in the field of radio astronomy. (SA)

On the occasion of the publication of the fifth edition of his book "The Milky Way," the author presents information on this galaxy and his life-long interest and research in this area. (SK)

Describes the graphic construction of lunar eclipses and how lunar graphics are used. The meaning of some terms and concepts and a diagram for a total lunar eclipse are also included. (HM)

Summarizes some of the astronomy materials developed at the Lower North South Australian Science Teachers Association (SASTA) meeting of October, 1978. (HM)