Computer software, or just software, is a collection of computer programs and related data that provides the instructions for telling a computer what to do and how to do it. Software refers to one or more computer programs and data held in the storage of the computer for some purposes. In other words, software is a set of programs, procedures, algorithms and its documentation concerned with the operation of a data processing system. Program software performs the function of the program it implements, either by directly providing instructions to the computer hardware or by serving as input to another piece of software. The term was coined to contrast to the old term hardware (meaning physical devices). In contrast to hardware, software "cannot be touched". Software is also sometimes used in a more narrow sense, meaning application software only. Sometimes the term includes data that has not traditionally been associated with computers, such as film, tapes, and records.

Surfing is a surface water sport in which the surfer rides a surfboard on the crest and face of a wave, which is carrying the surfer towards the shore. Waves suitable for surfing are found primarily in the ocean, but are also sometimes found in lakes and rivers, and also in manmade wave pools.

Many variations of the sport may exist in certain areas and the definitions of what constitutes a suitable wave, and craft has expanded over the years. Bodysurfing involves riding the wave without a board, and is considered by some to be the purest form of surfing. Other variations that have existed for centuries include paipo boarding, stand up paddle surfing, and the use of boats or canoes to ride waves. More modern craft that are used include bodyboards, inflatable mats (surfmatting), and foils. As documented in various surfing documentaries (including "Fair Bits") other objects have occasionally been used instead of surfboards, including water skiis, wakeboards, desks, guitars, and doors. When more than one person uses the same craft to ride a wave together, it is known as "tandem" surfing.

Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Named after the Roman god Saturn, its astronomical symbol (♄) represents the god's sickle. Saturn is a gas giant with an average radius about nine times that of Earth. While only one-eighth the average density of Earth, with its larger volume Saturn is just over 95 times as massive as Earth.

Saturn's interior is probably composed of a core of iron, nickel and rock (silicon and oxygen compounds), surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium and an outer gaseous layer.Electrical current within the metallic hydrogen layer is thought to give rise to Saturn's planetary magnetic field, which is slightly weaker than Earth's and around one-twentieth the strength of Jupiter's. The outer atmosphere is generally bland and lacking in contrast, although long-lived features can appear. Wind speeds on Saturn can reach 1,800 km/h (1,100 mph).