Aristotle’s Model of Universe Aristotle’s (384-322 BCE) model placed the superior planets in right order using their speed on the celestial sphere. He established a geocentric universe in which the…
Examples of Planetary Events Principle purpose of this lecture is to present on Examples of Planetary Events. Some events are; Conjunctions: Two objects closest from Earth’s point of view. Stationary: When the ecliptic longitude…
What is the cause for Precession of Equinoxes? Major purpose of this lecture is to present on cause for Precession of Equinoxes. Precession is caused by the torque applied by the Sun, the Moon, and…
Flynn Effect Flynn Effect is the phenomenon in which there is a marked increase in intelligence test score averages over time. It is supported by the fact…
Fertility and Intelligence Fertility and Intelligence has no scientific explanation why fertility may be negatively influenced by a higher level of intelligence. It has been investigated in many…
Relation between Solar motion and the Calendar The Sun’s position relative to Vernal Equinox is important for determining the seasons and the calendar. A major function of the calendar was for agriculture. Solar…
Where is the Center of Celestial Sphere? The celestial sphere is a device used to represent the direction of celestial objects for observation. For example, someone in Beijing would see the Moon’s…
What is Constellation? The term “constellation” is also less formally used to describe a group of star visibly related to each other in a pattern, such as those…
Euthenics This article focus on Euthenics, which is a science concerned with bettering the condition of human beings through the improvement of their environment. Affecting the…
Heliocentric Model of Planetary Motion In the heliocentric model, the Earth and other planets orbit the Sun. The prograde and retrograde motions are apparent effects due to relative motions of the…
Accountability Accountability actually includes the responsibility for money or other entrusted property. It is the obligation of an individual or organization to account for its activities,…
Geocentric Model of Planetary Motion Prime purpose of this lecture is to present on Geocentric Model of Planetary Motion. Here briefly explains qualitatively the prograde and retrograde motions, and brightness variation. Motion…