aerometer:  an instrument designed to measure the density (among other parameters) of the air and some gases.


Aeronautics: the science or art involved with the study, design, and manufacturing of air flight capable machines, and the techniques of operating aircraft and rockets within the atmosphere.


or Alkimija.

Alchemy: an ancient branch of natural philosophy, a philosophical and protoscientific tradition practiced throughout Europe, Africa, and Asia, originating in Greco-Roman Egypt (primarily Alexandria) in the first few centuries AD. It aims to purify, mature, and perfect certain objects.


Allotropy:  or allotropism (from Ancient Greek ἄλλος (allos), meaning ‘other’, and τρόπος (tropos), meaning ‘manner, form’) is the property of some chemical elements to exist in two or more different forms, in the same physical state, known as allotropes of the elements.

Source: Italian

Ref: JA


Anthropogeography: The study of the geographical distribution of humankind and the relationship between human beings and their environment.

Source: Italian


Anthropography: a branch of anthropology dealing with the distribution of humans as distinguished by physical character, language, institutions, and customs.


Orbital mechanics or astrodynamics:the application of ballistics and celestial mechanics to the practical problems concerning the motion of rockets and other spacecraft. The motion of these objects is usually calculated from Newton’s laws of motion and law of universal gravitation. It is a core discipline within space-mission design and control.


Astrophysics: the branch of astronomy that employs the principles of physics and chemistry “to ascertain the nature of the astronomical objects, rather than their positions or motions in space”. Among the objects studied are the Sun, other stars, galaxies, extrasolar planets, the interstellar medium and the cosmic microwave background