trivial orbit
21Transit (satellite) — Transit 2A with GRAB 1 atop during launch preparations The TRANSIT system, also known as NAVSAT (for Navy Navigation Satellite System), was the first satellite navigation system to be used operationally. The system was primarily used by the U.S.… …
22Tests of general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …
23cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …
24chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
25Dynkin diagram — See also: Coxeter–Dynkin diagram Finite Dynkin diagrams Affine (extended) Dynkin diagrams …
26Outer billiard — Outer Billiards is a dynamical system based on a convex shape in the plane. Classically, this system is defined for the Euclidean plane but one can also consider the system in the hyperbolic plane or in other spaces that suitably generalize the… …
27Douglas SASSTO — Douglas Aircraft s SASSTO, short for Saturn Application Single Stage to Orbit , was a single stage to orbit (SSTO) reusable launch system designed by Philip Bono s team in 1967. SASSTO was a study in minimalist designs, a launcher with the… …
28Science and mathematics from the Renaissance to Descartes — George Molland Early in the nineteenth century John Playfair wrote for the Encyclopaedia Britannica a long article entitled ‘Dissertation; exhibiting a General View of the Progress of Mathematics and Physical Science, since the Revival of Letters …
29Old quantum theory — Quantum mechanics Uncertainty principle …
30Weinstein conjecture — In mathematics, the Weinstein conjecture refers to a general existence problem for periodic orbits of Hamiltonian or Reeb vector flows. More specifically, the current understanding is that a regular compact contact type level set of a Hamiltonian …
