Satellite

In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as Earth's Moon.

The world's first artificial satellite, the Sputnik 1, was launched by the Soviet Union in 1957. Since then, thousands of satellites have been launched into orbit around the Earth. Some satellites, notably space stations, have been launched in parts and assembled in orbit. Artificial satellites originate from more than 40 countries and have used the satellite launching capabilities of ten nations. About a thousand satellites are currently operational, whereas thousands of unused satellites and satellite fragments orbit the Earth as space debris. A few space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Mercury, Venus, Mars, Jupiter, Saturn, Vesta, Eros, Ceres, and the Sun.

Satellites are used for a large number of purposes. Common types include military and civilian Earth observation satellites, communications satellites, navigation satellites, weather satellites, and research satellites. Space stations and human spacecraft in orbit are also satellites. Satellite orbits vary greatly, depending on the purpose of the satellite, and are classified in a number of ways. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit.

On Through the Night

On Through the Night is the debut album by English rock band Def Leppard, released in 1980. The album was produced by Tom Allom. It charted at No. 15 on the UK Albums Chart and No. 51 on the Billboard 200. The album features re-recorded versions of "Rocks Off" and "Overture", tracks from the band's original independently released EP, The Def Leppard E.P. Other tracks are re-recorded versions of early demos, some of which appeared on the First Strike and Warchild bootlegs. The album was certified platinum by the RIAA on 9 May 1989.

"Rocks Off", "Wasted", "Hello America" and "Rock Brigade" were released as singles. However, the versions of "Rocks Off" (titled "Getcha Rocks Off") and "Wasted" that appears on the singles is a different recording from that of the LP, as is its B-side, "Hello America". The single "Getcha Rocks Off" included the songs "Ride into the Sun" and "Overture".

Reception

Satellite (moth)

The Satellite (Eupsilia transversa) is a moth of the family Noctuidae. It is distributed throughout the Palearctic.

This is a fairly variable species with greyish or reddish brown forewings, often marked with darker bands. The common name derives from the prominent stigma, ranging in colour from white or yellow to red, which has two smaller spots close to it, apparently “in orbit”. The hindwings are brown with a paler fringe. The wingspan is 40–48 mm. This species flies at night from September to April and is active on mild nights throughout the winter. It will come to light but is more strongly attracted to sugar and various flowers.

Distribution

The species ranges from Ireland to Japan. Specifically, south to Northern Spain, Sardinia, Central Italy then Macedonia, Bulgaria, Asia minor and the Caucasus East to Central Asia and the Russian Far East and Siberia before reaching Japan. In the North, the geographical presence extends to Scotland and the Orkney Islands. Individuals are reported by Iceland. In Fennoscandia the range extends almost to the Arctic Circle, as well as in northern Russia. The species is very cold tolerant and lives in a variety of habitats, from forests to open grasslands, from the lowlands up to above the tree line. From temperate areas to the subarctic tundra. The species rises up to 1800 m in the Alps.

Lead and follow

In some types of partner dance, lead and follow are designations for the two dancers comprising a dance couple. In the case of mixed-sex couples, the male is traditionally the lead and the female is the follow. The lead is responsible for guiding the couple and initiating transitions to different dance steps and, in improvised dances, for choosing the dance steps to perform. The lead conveys his choices and direction to the follow through subtle physical and visual signals, thereby allowing the couple to be smoothly coordinated.

Theory

The amount of direction given by the lead depends on several factors, including dance style, social context of the dance, and experience and personalities of the dancers. Some partner dances (e.g., Lindy Hop) employ an open position that encourages improvisation by the follow. Others, such as Argentine Tango, involve a close embrace (or closed position) that requires the follow to strictly conform to the lead's direction.

Social partner dance principles

Leader (surname)

Leader is a surname. Notable people with the surname include:

Concertmaster

The Concertmaster (from the German Konzertmeister) is the second-most significant person in an orchestra, symphonic band or other musical ensemble after the conductor or director. Another common term in the U.S. is "First Chair." In the U.K., the term commonly used is "leader."

Orchestra

In an orchestra, the concertmaster is the leader of the first violin section. There is another violin section, the second violins, led by the principal second violin. Any violin solo in an orchestral work is played by the concertmaster (except in the case of a concerto, in which case a guest soloist usually plays). It is usually required that the concertmaster be the most skilled musician in the section, experienced at learning music quickly, counting rests accurately and leading the rest of the string section by his or her playing and bow gestures.

The concertmaster sits to the conductor's left, closest to the audience, in what is called the "first chair," "first stand" or "first desk" (in the UK). He or she makes decisions regarding bowing and other technical details of violin playing for the violins, and sometimes all of the string players. The concertmaster leads the orchestra in tuning before concerts and rehearsals, and other technical aspects of orchestra management. Leading the orchestral tuning is not just a mere formality; if the concertmaster believes that a section is not adequately tuned, he or she will signal to the oboe player to play another "A." Several larger orchestras have one or more assistant concertmasters, who lead the orchestra in the concertmaster's absence.