ascending motion
21ear, human — ▪ anatomy Introduction organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium). The human ear, like …
22Pluto — This article is about the dwarf planet. For other uses, see Pluto (disambiguation). Pluto   …
23human cardiovascular system — ▪ anatomy Introduction organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the… …
24Orbital perturbation analysis (spacecraft) — Isaac Newton in his Philosophiæ Naturalis Principia Mathematica demonstrated that the gravitational force between two mass points is inversely proportional to the square of the distance between the points and fully solved corresponding two body… …
25atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
26plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …
27Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …
28Cadence (music) — Perfect authentic cadence (V I [here in V7 I form] with roots in the bass and tonic in the highest voice of the final chord): ii V7 I progression in C   …
29Sun-synchronous orbit — Diagram showing the orientation of a Sun synchronous orbit (green) in four points of the year. A non sun synchronous orbit (magenta) is also shown for reference A Sun synchronous orbit (sometimes called a heliosynchronous orbit) is a geocentric… …
30Counterpoint — For other uses, see Counterpoint (disambiguation). Extract from Fugue no. 17 in A flat major, BWV 862, from book 1 of The Well Tempered Clavier by Bach, who is widely regarded as the greatest practitioner of counterpoint.[ …
