- 産業: Astronomy
- Number of terms: 6727
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Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research by NASA-sponsored scientists on meteorites, asteroids, planets, moons, and other materials in our Solar System. The website is supported by the Cosmochemistry Program of NASA's Science Mission ...
A small body (a "dirty iceball", typically 1 km across, with dust and plasma tails) that circles the Sun with a highly elliptical orbit.
Industry:Astronomy
Celestial coordinate which is equivalent to the latitude of an object on Earth. This is an angular measure of how far above the celestial equator an object lies.
Industry:Astronomy
The percentage of the total volume of rock or soil that consists of open spaces. (The space between particles is called pore space. )
Industry:Astronomy
The configuration (shapes, positions, arrangements) and relief (elevations, slopes) of the land surface.
Industry:Astronomy
Un programma di esplorazione per raccogliere meteoriti in Antartide sostenuto da sovvenzioni da ufficio di programmi polari della u. s. National Science Foundation e dalla NASA. Il lavoro delle squadre ANSMET fornisce alla comunità di ricerca con una fonte costante di nuovi materiali extraterrestri, compresi i campioni lunari e marziani.
Industry:Astronomy
U. S. Space Program that included 6 piloted lunar landings between 1969 and 1972. Apollo astronauts collected and returned 382 kilograms of rock and sediment samples from the Moon.
Industry:Astronomy
Un elemento con numero atomico 8; simbolo: O. It è in realtà il più comune elemento in croste e manti dei pianeti interni e lune rocciose, che compongono tutti i minerali silicati. Insieme a idrogeno, carbonio e azoto, l'ossigeno è indispensabile alla vita.
Industry:Astronomy
