Sphere packing - Wikipedia, the free encyclopedia In geometry, a sphere packing is an arrangement of non-overlapping spheres within a containing space. The spheres considered are usually all of identical size, and the space is ...
Demographics of Singapore - Wikipedia, the free encyclopedia This article is about the demographic features of the population of Singapore, including population density, ethnicity, education level, health of the populace, economic status ...
Dark energy - Wikipedia, the free encyclopedia In physical cosmology, astronomy and celestial mechanics, dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the ...
Lockheed Martin - Wikipedia, the free encyclopedia Lockheed Martin (NYSE) is an American global aerospace, defense, security, and advanced technology company with worldwide interests. It was formed by the merger of Lockheed ...
Ally Financial - Wikipedia, the free encyclopedia Ally Financial Inc., previously known as GMAC Inc. (an acronym for General Motors Acceptance Corporation), is a bank holding company headquartered in Detroit, Michigan, United ...