transfer between circular orbits
21Mars — This article is about the planet. For other uses, see Mars (disambiguation) …
22Angular momentum — For a generally accessible and less technical introduction to the topic, see Introduction to angular momentum. Classical mechanics Newton s Second Law …
23Al-Andalus — This article is about the historical region. For the modern day region, see Andalusia. For the district in Kuwait, see Kuwait City. For the musical group, see Andalus. History of Al Andalus 711–1492 711–732 Musl …
24electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
2511th century — As a means of recording the passage of time, the 11th century is the period from 1001 to 1100 in accordance with the Julian calendar in the Christian/Common Era. In the history of European culture, this period is considered the early part of the… …
26Scientific revolution — This article is about a period in the history of science. For the process of scientific progress via revolution, proposed by Thomas Kuhn, see Paradigm shift …
27Scientific Revolution — The period which many historians of science call the Scientific Revolution can be roughly dated as having begun in 1543, the year in which Nicolaus Copernicus published his De revolutionibus orbium coelestium (On the Revolutions of the Heavenly… …
28Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
29IK Pegasi — Starbox begin name=IK Pegasi Starbox image caption=Location of IK Pegasi. Starbox observe epoch=J2000 ra=RA|21|26|26.6624cite web title=SIMBAD Query Result: HD 204188 Spectroscopic binary publisher=Centre de Données astronomiques de Strasbourg… …
30Nicholas of Cusa — Cusanus redirects here. For the lunar crater, see Cusanus (crater). Nicholas of Cusa Nicholas of Cusa, by Master of the Life of the Virgin Full name Nicholas of Cusa Other names Nicolaus Chrypffs , Nicholas of Kues …
