- Settore: 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 ...
The time when the Sun is 12-18 degrees below the horizon. When the Sun moves from 19 to 18 degrees below the horizon, astronomers can begin to detect an increase in the brightness of the sky, although to the naked eye the sky still looks dark.
Industry:Astronomy
Mixture of gases that surround and are gravitationally attached to a planet.
Industry:Astronomy
Fluid magma that flows onto the surface of a planet or moon; erupted from a volcano or fissure. Also, the rock formed by solidification of this material.
Industry:Astronomy
The time when the Sun is 12-18 degrees below the horizon. When the Sun moves from 19 to 18 degrees below the horizon, astronomers can begin to detect an increase in the brightness of the sky, although to the naked eye the sky still looks dark.
Industry:Astronomy
Геохімічних компонент в місячних порід, багаті калій (К), рідкісні – Земля елементів (Рі), фосфор (Р), торій та інші елементи, несумісні. Ці елементи не включені в загальних рок формування мінералів під час магми кристалізації, таким чином вони стають збагачений залишковий магми і в скелі, остаточно сформувався від нього.
Industry:Astronomy
