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Jacobs, K. C.

Publications and source records attributed to Jacobs, K. C..

3 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1986

Orbital acceleration and the energy budget in the galilean satellite system

Theories concerning the resonance which gives rise to the tidal heating of Io are discussed. Yoder's (1979) suggestion that the resonance is maintained by tides raised on Jupiter by Io is examined along with the proposal of Greenberg (1982) that with smaller Jovian torque the system could be evolving away from resonance. The significance of Lieske's (1986) finding of a much smaller than expected negative value for Io's orbital acceleration is addressed.

Greenberg, Richard↗
NASA NTRS1976

Extragalactic astronomy: The universe beyond our galaxy

This single-topic brochure is for high school physical science teachers to use in introducing students to extragalactic astronomy. The material is presented in three parts: the fundamental content of extragalactic astronomy; modern discoveries delineated in greater detail; and a summary of the earlier discussions within the structure of the Big-Bang Theory of evolution. Each of the three sections is followed by student exercises (activities, laboratory projects, and questions-and-answers). The unit close with a glossary which explains unfamilar terms used in the text and a collection of teacher aids (literature references and audiovisual materials for utilization in further study).

Jacobs, K. C.↗