astronomska jedinica

astronomska jedinica

The mean Earth-Sun distance, equal to 149. 5 million kilometers or 93 million miles.

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Industry/Domain: Astronomy
Category: Planetary science
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astronomska jedinica (AJ)

Aerospace; Space flight

Based on the mean Earth-to-sun distance, 149,597,870 km. Refer to "Units of Measure" section for complete information.

jedinica

Chemistry; General chemistry

A standard for comparison in measurements. For example, the meter is a standard length which may be compared to any object to describe its length.

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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