Mars

Mars

Of, or relating to the study of, planet Mars.

Industry: Astronomy

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Mars

occultation

Astronomy; Mars

The hiding of one heavenly body by another, as when the moon passes between earth and a star, or when one of the moons of jupiter or saturn passes behind the planet.

nadir

Astronomy; Mars

The point on the celestial sphere that is diametrically opposite the zenith, so that the zenith, nadir and center of earth are in one straight line. It is always 90 degrees below the horizon.

mass

Astronomy; Mars

The amount of matter in a body, which should not be confused with weight. The same object will have different weights in space and earth but the mass remains constant.

landing rocket

Astronomy; Mars

A "secondary rocket" intended to be used for descending to the surface of the moon or another planet while the major vehicle remains in an orbit around the destination body.

Kepler's laws of planetary motions and orbits

Laws governing the motions of planets in their orbits:. # the orbits of the planets are ellipses with the sun at a common focus. # the line joining a planet and the sun sweeps over equal areas during ...

joule

Astronomy; Mars

The s. I. Unit of energy, work, or quantity of heat. It is the force of one newton acting over a distance of a meter.

interferometer

Astronomy; Mars

Any instrument designed for producing and studying interference of two or more trains of waves or beams of electromagnetic radiation of the same range of wavelengths. Usually denotes an optical ...