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astromomski sumrak

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.

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sumrak
Aerospace; Space flight

For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.

nautički sumrak
Astronomy; Planetary science

The time when the Sun is 6-12 degrees below the horizon. Sky begins to get noticeably bright.

astronomski sumrak
Aerospace; Space flight

For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.

Nautički sumrak
Aerospace; Space flight

For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.

građanski sumrak
Aerospace; Space flight

For technical definition, please follow this link to the U.S. Naval Observatory Astronomical Applications website.

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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