** An annular solar eclipse occurs.

** The solar system ( BIG made SMALL )

** Solar air conditioning, air conditioning using solar power

** solar / wind: 1361 MWh ( 2. 68 %)

** A total solar eclipse occurs in southern part of Europe

** Einstein's theory of general relativity is tested by Arthur Eddington's observation of the " bending of light " during a total solar eclipse in Principe, and by Andrew Crommelin in Sobral, Ceará, Brazil ( confirmed November 19 ).

** The Pioneer 10 spacecraft is launched from Cape Kennedy, to be the first man-made satellite to leave the solar system.

** The first total solar eclipse to exceed seven minutes of totality in over 800 years, is visible in the Pacific and Peru.

** A solar Eclipse of record totality occurs, seen first in Hawaii then enters Mexico with the path directly crosses Cabo San Lucas and Mexico City seen by 20 million inhabitants, and finally ends in Colombia in South America.

** Pioneer 11 is launched on a mission to study the solar system.

** photodiodes ( including solar cells )

** Decipher — nanotechnology, solar physics

** Poppers: Use two motors with separate solar engines ; rely on differential sensors to achieve a goal.

** Parabolic trough-a type of solar thermal energy collector

** solar eclipse series which began on-1653 May 28 and ended on-373 July 4.

** Planets of the solar system and their major moons

** the solar eclipse series which began on 123 June and ended on 1385 July.

** Space-Man-Travel to the nine planets of the solar system, plus the sun, and solve hilariously illogical puzzles.

** Topic: the solar system

** 2040-Space-based solar power will be commercially viable.

** 2040-Space-based solar power will be commercially viable.

** New energy sources for desalination and purification, including hybrid systems that combine conventional and alternative power — especially solar power

** 11063 Poynting, an asteroid of our solar system

** 11. 73 meters wide ( solar arrays deployed )

** March 1504 lunar eclipse-Columbus ’ lunar eclipse

** A total eclipse is seen over parts of California and Nevada.

** Eclipsing binaries, double stars where, as seen from Earth's vantage point the stars occasionally eclipse one another as they orbit.

** lunar eclipse series which began on-1387 February 12 and ended on-71 April 12.

** the lunar eclipse series which began on 425 March and ended on 1723 May.

** Magner White, San Diego Sun, for his story of the eclipse of the sun.

** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

** Every infinite game in which is a Borel subset of Baire space is determined.

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.