густина

A natural solid object (metallic or stony/silicate) larger than 10 µm (microns) that has traveled through space, by natural means from the celestial body on which it formed, and ...

хелиум

Astronomi; Gezegen bilimi

An element with atomic number 2; symbol: He. It is the second most common element in the Sun and outer planets, but rare on the rocky planets.

кратер

Astronomi; Gezegen bilimi

A hole or depression. Most are roughly circular or oval in outline. On Earth most natural craters are of volcanic origin. On the Moon most are of impact origin.

магматски океан

Astronomi; Gezegen bilimi

Term used to describe the layer of magma, hundreds of kilometers thick; thought to have covered the Moon 4. 5 billion years ago. The timing, duration, cooling rates, convection, ...

негравитациони сили

Astronomi; Gezegen bilimi

Forces that alter the path of a comet, which are not caused by gravitational interaction with the Sun and planets. Typically this refers to uneven outgassing from vents on the ...

астронаут

Astronomi; Gezegen bilimi

Person engaged in or trained for spaceflight.

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Öne Çıkan Terimler

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Бренд Пери

The Band Perry is a country music group, made up of three siblings: Kimberly Perry (guitarist, pianist), Reid Perry (bass guitarist), and Neil Perry ...