Significant Achievements in Space Science 1967U.S. Government Printing Office, 1968 - 557 من الصفحات |
عبارات ومصطلحات مألوفة
abundances altitude Astron Astrophys atmosphere atomic biologic Biosatellite bursts carbonaceous chondrites chemical chondrites chondrules chromosphere composition concentration corona Cosmic Rays Cosmochim craters density detectors distribution Earth effects electron emission energy experiments Explorer Figure flight flux Galactic gamma Geochim geologic geomagnetic Geophys helium hydrogen impact impact craters increase indicate infrared interplanetary magnetic field investigations ionization ionosphere iron meteorites kilometers laboratory lines Lunar Orbiter magnetic-field magnetopause magnetosphere Mariner Mars measurements Moon NASA neutron observed optical oxygen pallasites particles percent photosphere planet planetary plasma polar pressure processes protons radiation radio region reported rocket rotation satellite Science shock Solar Cosmic Rays Solar Flare Solar Phys solar wind Space Sci spacecraft spectra spectrum structure sunspot Surveyor techniques tektites telescope temperature theory thermal tion ultraviolet upper variations velocity Venus volcanic wavelengths waves weightlessness X-Ray Sources
مقاطع مشهورة
الصفحة 252 - Solar Cosmic-Ray Multiply Charged Nuclei and the July 18, 1961, Solar Event. J. Geophys. Res., vol.
الصفحة 150 - VLF emissions are not explained satisfactorily by present theories of generation based simply on gyroresonance between energetic streaming electrons and whistler-mode waves traveling in the opposite direction. An extension of the gyroresonance idea is proposed in which the spatial variations of the electron gyrofrequency and the Doppler-shifted wave frequency are matched. The coupling time between a resonant electron and the wave is then maximized, and hence the output wave intensity is maximized....
الصفحة 430 - WASSON JT and KIMBERLIN J. (1967) The chemical classification of iron meteorites. II. Irons and pallasites with germanium concentrations between 8 and 100 ppm.
الصفحة 64 - No. 20, 1964, pp. 25-26) ... as tentatively recommended interim objectives, a sterilization level such that the probability of a single viable organism aboard any spacecraft intended for planetary landing or atmospheric penetration would be less than 1 X 10'.
الصفحة 422 - Seismic Evidence for a New Layered Structure of the Earth's Core. J. Geophys. Res., vol.
الصفحة 60 - ... primary focus of the program. (4) Avoiding the contamination of Mars: a major mission constraint. — Before proceeding to other aspects of the undertaking, we are concerned to single out from the many and diverse problems that Martian exploration will entail, the task of prevention of contamination. Contamination of the Martian surface with terrestrial microbes could irrevocably destroy a truly unique opportunity for mankind to pursue a study of extraterrestrial life. Thus, while we are eager...
الصفحة 30 - HARRIES, JR ; MCCRACKEN, KG ; FRANCEY, RJ ; AND FENTON, AG: A Strong X-Ray Source in the Vicinity of the Constellation Crux.
الصفحة 328 - III mission was highly successful for a variety of reasons, perhaps the most important of which was the...
الصفحة 159 - CARPENTER, DL; AND STONE, K.: Direct Detection by a Whistler Method of the Magnetospheric Electric Field Associated with a Polar Substorm.