The equinox
On the day of the equinox, also known as the equinox, the sun is exactly over the equator. This happens twice a year, once in spring and once in fall. The equinox in spring is also known as...
Category: General
Astronomical units of measurement
This article explains the specification of distances, angles and magnitudes in an astrometric context. Distances The unit kilometer, which is commonly used in everyday life, is generally only used for short distances, e.g. for planetary diameters or...
The types of twilight
The different phases of twilight have an effect on the visibility of celestial bodies. During civil twilight, only the brightest stars can be seen, while more stars are visible during nautical twilight. During astronomical twilight...