RI

RI or Ri may refer to:

Zodiac

In both astrology and historical astronomy, the zodiac (Greek: ζῳδιακός, zōidiakos) is a circle of twelve 30° divisions of celestial longitude that are centered upon the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The paths of the Moon and visible planets also remain close to the ecliptic, within the belt of the zodiac, which extends 8-9° north or south of the ecliptic, as measured in celestial latitude. Because the divisions are regular, they do not correspond exactly to the boundaries of the twelve constellations after which they are named.

Historically, these twelve divisions are called signs. Essentially, the zodiac is a celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude, and the position of the Sun at vernal equinox as the origin of longitude.

Usage

The zodiac was in use by the Roman era, based on concepts inherited by Hellenistic astronomy from Babylonian astronomy of the Chaldean period (mid-1st millennium BC), which, in turn, derived from an earlier system of lists of stars along the ecliptic. The construction of the zodiac is described in Ptolemy's vast 2nd century AD work, the Almagest.

R&I

R&I may refer to:

See also

Aube

Aube (French pronunciation: ​[ob]) is a French department in the Alsace-Champagne-Ardenne-Lorraine region of north-eastern France. As with sixty departments in France, this department is named after a river: the Aube. With 305,606 inhabitants (2012), Aube is 76th department in terms of population. The inhabitants of the department are known as Aubois or Auboises

The department was constituted as it is today by a decree of the National Assembly of 15 January 1790.

Geography

Location

The Aube department is located in the south-west side of the Alsace-Champagne-Ardenne-Lorraine region. It borders the departments of Marne in the north (about 130 km long), Haute-Marne to the east (about 100 km long), Côte-d'Or in the south-east (about 45 km long), Yonne in the south-west (about 175 km long), and Seine-et-Marne in the west (about 45 km long).

Subregions of Aube

Within the department regions of natural or traditional countryside can be identified as follows:

Aube (disambiguation)

Aube is a department in the northeastern part of France.

Aube may also refer to:

See also

Aube (river)

The Aube is a river in France, right tributary of the Seine. It is 248 kilometres (154 mi) long. The river gives its name to the Aube département.

Its source is in the Haute-Marne département, on the plateau of Langres, near the town Auberive. It flows through the départements Haute-Marne, Côte-d'Or, Aube, and Marne. It flows into the river Seine near Marcilly-sur-Seine. Cities along the river include Bar-sur-Aube and Arcis-sur-Aube.

Main tributaries

Departments and towns crossed

See also

References

External links

Media related to Aube River at Wikimedia Commons