The cosmolabe was an ancient astronomical instrument resembling the astrolabe, formerly used for measuring the angles between heavenly bodies.
 It is also called pantacosm.
 Jacques Besson also uses this name, or universal instrument, for his invention described in "Le cosmolabe" (1567), which could be used for astrometry, cartography, navigation, and surveying.
The medieval Muslims took a keen interest in the study of heavens: partly because they considered the celestial bodies to be divine, partly because the dwellers of desert-regions often travelled at night, and relied upon knowledge of the constellations for guidance in their journeys.
 After the advent of Islam, the Muslims needed to determine the time of the prayers, the direction of the Kaaba, and the correct orientation of the mosque, all of which helped give a religious impetus to the study of astronomy and contributed towards the belief that the heavenly bodies were influential upon terrestrial affairs as well as the human condition.
 The science dealing with such influences was termed astrology (Arabic: علم النجوم "Ilm an-Nujūm"), a discipline contained within the field of astronomy (more broadly known as علم الفلك "Ilm al-Falak" 'the science of formation [of the heavens]').
 The principles of these studies were rooted in Arabian, Persian, Babylonian, Hellenistic and Indian traditions and both were developed by the Arabs following their establishment of a magnificent observatory and library of astronomical and astrological texts at Baghdad in the 8th century.
The Gaussian gravitational constant (symbol k ) is a fixed, empirical number which relates the period of an orbit to the total mass of the orbiting bodies and their distance apart, first proposed by Carl Friedrich Gauss in his 1809 work "Theoria Motus Corporum Coelestium in Sectionibus Conicis Solem Ambientum" ("Theory of the Motion of the Heavenly Bodies Moving about the Sun in Conic Sections").
Space jurisdiction, a field addressing what countries can enforce various laws in space, has become more important as the private sector enters the field of space tourism.
 According to the Agreement Governing the Activities of States on the Moon and Other Celestial Bodies, known as the Moon Treaty, the jurisdiction for all laws regarding heavenly bodies is turned over to the international community.
Astrolatry is the worship of stars and other heavenly bodies as deities, or the association of deities with heavenly bodies.
The Heavenly Bodies was a professional wrestling tag team famous for having worked in Smoky Mountain Wrestling, the World Wrestling Federation, and various independent promotions.
 Over the years there have been different variations of the team, which has at different times consisted of "Doctor" Tom Prichard, "Sweet" Stan Lane, "Beautiful" Bobby Eaton, and "Gigolo" Jimmy Del Ray and was led by former Midnight Express manager Jim Cornette.
The triquetrum (derived from the Latin "tri-" ["three"] and "quetrum" ["cornered"]) was the medieval name for an ancient astronomical instrument first described by Ptolemy ("c." 90–"c." 168) in the "Almagest" (V. 12).
 Also known as "Parallactic Rulers", it was used for determining altitudes of heavenly bodies.
 Ptolemy calls it a ""parallactic instrument"" and seems to have used it to determine the zenith distance and parallax of the Moon.
The Heavenly Bodies was a professional wrestling tag team that wrestled in the Tennessee area.
 The team consisted of Al Greene (real name Al Denney) and Don Greene.
 They were 7 time NWA Southern Tag Team Champions and wrestled as a tag team from October 6, 1955 to June 28, 1973.
James Mark Cornette (born September 17, 1961) is an American professional wrestling manager, commentator, promoter, booker and podcaster.
Sullam al-sama' also known as Resaleh-ye Kamaliyyeh (Arabic*: سُلَم السماء, Transliterated as Sǒllam os-Samā') meaning ""The Ladder of the Sky"" or ""The Stairway of Heaven"" is an astronomical treatise written by the Persian mathematician and astronomer Jamshid Kashani in 1407 about the determination of distance and size of the heavenly bodies such as the Earth, the Moon and the Sun.

Question: What was the nationality of the leader of The Heavenly Bodies?
Answer: American