- Отрасли: Astronomy
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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 ...
Son derece kısa bir süre sürer güçlü bir compressional dalga. Şok dalgaları etkisi gezegen yüzeyinde bir göktaşı gibi patlayıcı olaylar oluşturulur.
Industry:Astronomy
A silicate mineral common in basalt and composed mostly of iron (Fe), magnesium (Mg), calcium ( Ca), and silicon (Si). Composition varies as a mixture among FeSiO<sub>3</sub>, MgSiO<sub>3</sub>, and CaSiO<sub>3</sub>.
Industry:Astronomy
U. S. Mission to Mars, 1971 yılında başlatılan yüzeyinin Mars Volkanlar, Valles Marineris, kutup kapaklar ve uyduları Phobos ve Deimos ilk ayrıntılı görünümler dahil olmak üzere küresel görüntü elde etti. Uzay aracı, atmosferik kompozisyon, yoğunluk, basınç ve sıcaklık ve da yüzey kompozisyon, sıcaklık, ağırlık ve topografya Mars üzerinde veri toplandı. Mariner 9 Web sitesi.
Industry:Astronomy
Radiocarbon, or <sup>14</sup>C, is the unstable, radioactive isotope of carbon having atomic number 6 and atomic mass 14. It is continuously produced in Earth's upper atmosphere by cosmic ray bombardment. In space, <sup>14</sup>C is produced when cosmic rays interact with oxygen in silicate minerals in rocks. The half-life of <sup>14</sup>C is 5730 years, which makes this radioactive isotope suitable for dating rocks and archaeological items as old as about 75,000 years.
Industry:Astronomy
A 10 µm to 1-meter-size natural solid object moving in interplanetary space. Meteoroids may be primary objects or derived by the fragmentation of larger celestial bodies, not limited to asteroids. Meteoroids between 10 µm (microns) and 2 mm in size are called "micrometeoroids. "
Industry:Astronomy
Dark-colored, fine-grained extrusive igneous rock with about 52 to 63 weight percent silica (SiO<sub>2</sub>). Andesite consists mainly of plagioclase and one or more mafic minerals. The word andesite is derived from the Andes Mountains, located along the western edge of South America, where andesite rock is common.
Industry:Astronomy
(Ayrıca parlayan meteor için başvurabilirsiniz) Dünya'nın atmosferi bir meteor geçtiği zaman görünür ışık gökyüzünde üretti.
Industry:Astronomy
