vodonik

vodonik

An element with atomic number 1; symbol: H. It is the most abundant element in the Solar System, making up 90 percent of the Sun. Hydrogen, carbon, nitrogen, and oxygen are essential for life.

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Industry/Domain: Astronomy
Category: Planetary science
Company: PSRD
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vodonik-sulfid

Chemistry; Inorganic chemistry

H 2 S Flammable, toxic, colorless gas with offensive odor, boiling at _60_C; soluble in water and alcohol; used as an analytical reagent, as a sulfur source, and for purification ...

vodonik-peroksid

Chemistry; Inorganic chemistry

H 2 O 2 Unstable, colorless, heavy liquid boiling at 158_C; soluble in water and alcohol; used as a bleach, chemical intermediate, rocket fuel, and antiseptic. Also known as ...

sumpor

Astronomy; Planetary science

An element with atomic number 16; symbol: S. Sulfur is common on the surface of Jupiter's moon Io.

helijum

Astronomy; Planetary science

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.

Ceres

Astronomy; Planetary science

The largest of the known asteroids; a dwarf planet. Also called 1 Ceres because it was the first asteroid to be discovered (by Piazzi in 1801).

Jarkovski efekat

Astronomy; Planetary science

An explanation for the shift in an asteroid's orbit around the Sun due to a thermal thrust caused by the body's uneven heating by sunlight. The illuminated side of an asteroid ...

Viking

Astronomy; Planetary science

U. S. Mission to Mars, composed of two spacecraft, launched in 1975. Viking 1 and Viking 2 both consisted of an orbiter and a lander. Primary mission objectives were to obtain ...

sublimacija

Astronomy; Planetary science

Phase transformation from solid to gas.

Misija Stardust

Astronomy; Planetary science

The fourth in NASA's Discovery program of low-cost spacecraft with highly focused science goals, Stardust was comprised of a spacecraft and capsule that completed a seven-year, ...

Solarna i heliosfericna observatorija

Astronomy; Planetary science

A project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind. SOHO was launched in December, 1995. SOHO ...

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Industry/Domain: Geography Category: Countries & Territories

Sveta gora

Greek mountain and pilgrimage site, known as the birthplace of early Christian Orthodox monasticism, housing around 20 Eastern Orthodox monasteries. ...