Single-seater racing

Single-seater racing is perhaps the most well-known form of motorsport outside of North America, with cars designed specifically for high-speed racing. The wheels are not covered, and the cars often have aerofoil wings front and rear to produce downforce and enhance adhesion to the track.

Single-seater races are held on specially designed closed circuits or street circuits closed for the event. Many single-seater races in North America are held on "oval" circuits and the Indy Racing League races mostly on ovals.The best-known variety of single-seater racing, except in North America, is the Formula One World Championship, which involves an annual championship of around 18 races a year featuring major international car and engine manufacturers such as Ferrari, Mercedes-Benz , BMW , Toyota, Honda, and Renault in an ongoing battle of technology and driver skill. Formula One is, by any measure, the most expensive sport in the world, with some teams spending in excess of 300 million US dollars per year. Formula One is widely considered to be the pinnacle of motorsports. In North America, the cars used in the National Championship have traditionally been similar to F1 cars but with more restrictions on technology aimed at helping to control costs.

Other single-seater racing series are the A1 Grand Prix , GP2 , Formula Nippon, Formula Renault 3.5, Formula Three and Formula Atlantic.There are other categories of single-seater racing, including kart racing, which employs a small, low-cost machine on small tracks. Many of today's top drivers started their careers in karts. Formula Ford represents a popular first open-wheel category for up-and-coming drivers stepping up from karts.

Shi'a Islam

Shi'a Islam, also Shi'ite Islam, or Shi'ism is a denomination of the Islamic faith. It is short for Shi'at 'Ali . Even though it is the second largest denomination of Islam, among the hundreds of millions of Muslims Shi'a muslims are considered to be a minority in number. Shi'a Muslims adhere to what they consider to be the teachings of the Prophet Muhammad and the religious guidance of his family whom they refer to as the Ahlul Bayt. Thus, Shi'as consider the first three ruling caliphs of Islam a historic occurrence and not something attached to faith. The singular/adjective form is Shi’i and refers to a follower of the Household of Muhammad and of Ali ibn Abi Talib in particular.
Shi'a islam, like sunni islam, has at times been divided into many branches but today there are just three branches. The best known and the one with most adherents is Twelvers the others being Ismaili and Zaidiyyah. Also Alawites known as Shi'a but because of their idea about Ali this claim is disputed, though mainstream shias denounce for taking an extreme view of Ali, and not actually following the pillars of islam.

Spatial Measurement

The measurement of physical space has long been important. Geometry, the name given to the branch of mathematics which measures spatial relations, was popularised by the ancient Greeks, although earlier societies had developed measuring systems. The International System of Units, is now the most common system of units used in the measuring of space, and is almost universally used within science.
Geography is the branch of science concerned with identifying and describing the Earth, utilising spatial awareness to try and understand why things exist in specific locations. Cartography is the mapping of spaces to allow better navigation, for visualisation purposes and to act as a locational device. Geostatistics apply statistical concepts to collected spatial data in order to create an estimate for unobserved phenomena. Astronomy is the science involved with the observation, explanation and measuring of objects in outer space.

In Astronomy

Space refers collectively to the relatively empty parts of the universe. Any area outside the atmospheres of any celestial body can be considered 'space'. Although space is certainly spacious, it is not always empty, but can be filled with matter — say a tenuous plasma. In particular, the boundary between space and Earth's atmosphere is conventionally set at the Karman line.