Natural satellite

A natural satellite is a celestial body that orbits another celestial body of greater mass (e.g., a planet, star, or dwarf planet), which is called its primary. For example, the Moon is a natural satellite of Earth, and Earth is a natural satellite of the Sun.

In the Solar System there are 173 known natural satellites which orbit within 6 planetary satellite systems. In addition, several other objects are known to have satellites, including three IAU-listed dwarf planets: Pluto, Haumea, and Eris.As of January 2012, over 200 minor-planet moons have been discovered. There are 76 known objects in the asteroid belt with satellites (five with two each), four Jupiter trojans, 39 near-Earth objects (two with two satellites each), and 14 Mars-crossers. There are also 84 known natural satellites of trans-Neptunian objects. Some 150 additional small bodies have been observed within the rings of Saturn, but only a few were tracked long enough to establish orbits. Planets around other stars are likely to have satellites as well, and although numerous candidates have been detected to date, none have yet been confirmed.

Satellite (The Player Piano album)

Satellite is the Japanese reissue of The Player Piano's Self-Titled LP. It was released by Friend of Mine Records on December 4, 2007, and distributed in the United States by Sunset Alliance Records.

History

Satellite was originally issued as a limited release, self-titled LP, released by Sunset Alliance Records. The first pressing was limited to 1000 CDs which came with a hand-numbered, dye-cut cardboard insert for the artwork. Shortly after releasing this LP in 2002, the band broke up in order to pursue graduate studies (among other things). This, however, did not hinder the album itself from receiving rave reviews all over the world. In response to this demand, the record was given a name, new artwork, two additional songs, and was reissued by Friend of Mine Records in Japan.

Reception

Satellite and its original release were very well received all over the world.

In the United States, for example, Anthem Magazine wrote: "Who would have thought that five boys from Utah could compose a record such as this. I caught this band by accident recently and was impressed not only by their affinity for melody, but by their attention to detail. The songs on this album rise and fall in such a pleasant manner that when it comes to an end, all I want is more. It has remained in my cd player since I bought it and I don’t see it going anywhere soon. This may be a hard record to find, but it’s worth searching out. The quality of the artwork is enough to merit buying this album." According to Wade Chamberlain at FakeJazz, "I'd seen the Player Piano live several times before hearing their self titled debut, and had been more than impressed with their live shows. I have to admit that I was skeptical that the CD could reproduce the beauty of their live performances. If you looked at my score at the top of the review you'd know that it has. This is a beautiful album." Chamberlain gave the album a 10 out of 12.

Broken China

Broken China is a progressive rock solo album by Pink Floyd keyboardist Richard Wright.

Overview

The album is a four-part concept album which documents Wright's then-wife Mildred's battle with depression, and is very much like a classic Pink Floyd concept album in its structure and overall feel. Two songs, "Reaching for the Rail" and "Breakthrough" feature Sinéad O'Connor on lead vocals, with Wright singing elsewhere. The album was recorded in Wright's personal studio in France. Broken China was only Wright's second solo record after 1978's Wet Dream and the last to be released before his death in September 2008.

Wright asked fellow Pink Floyd bandmate David Gilmour to perform on the album, to which Gilmour agreed to play one track. However, the approach for the song was changed later on, and Gilmour's performance was not used on the finished album.

On the DVD David Gilmour in Concert, a guest appearance is made by Wright, who sings "Breakthrough" accompanied by David Gilmour and his band.

Top

A top is a toy designed to be spun rapidly on the ground, the motion of which causes it to remain precisely balanced on its tip because of inertia. Such toys have existed since antiquity. Traditionally tops were constructed of wood, sometimes with an iron tip, and would be set in motion by aid of a string or rope coiled around its axis which, when pulled quickly, caused a rapid unwinding that would set the top in motion. Today they are often built of plastic, and modern materials and manufacturing processes allow tops to be constructed with such precise balance that they can be set in motion by a simple twist of the fingers and twirl of the wrist without need for string or rope.

Characteristics

The motion of a top is produced in the most simple forms by twirling the stem using the fingers. More sophisticated tops are spun by holding the axis firmly while pulling a string or twisting a stick or pushing an auger. In the kinds with an auger, an internal weight rotates, producing an overall circular motion. Some tops can be thrown, while firmly grasping a string that had been tightly wound around the stem, and the centrifugal force generated by the unwinding motion of the string will set them spinning upon touching ground.

Top (clothing)

A top is clothing that covers at least the chest, but which usually covers most of the upper human body between the neck and the waistline. The bottom of tops can be as short as mid-torso, or as long as mid-thigh. Men's tops are generally paired with pants, and women's with pants or skirts. Common types of tops are t-shirts, blouses and shirts.

Design

The neckline is the highest line of the top, and may be as high as a head-covering hood, or as low as the waistline or bottom hem of the top. A top may be worn loose or tight around the bust or waist, and may have sleeves or shoulder straps, spaghetti straps (noodle straps), or may be strapless. The back may be covered or bare. Tops may have straps around the waist or neck, or over the shoulders.

Types

Neck styles

See also

References

External links

Category of topological spaces

In mathematics, the category of topological spaces, often denoted Top, is the category whose objects are topological spaces and whose morphisms are continuous maps or some other variant; for example, objects are often assumed to be compactly generated. This is a category because the composition of two continuous maps is again continuous. The study of Top and of properties of topological spaces using the techniques of category theory is known as categorical topology.

N.B. Some authors use the name Top for the category with topological manifolds as objects and continuous maps as morphisms.

As a concrete category

Like many categories, the category Top is a concrete category (also known as a construct), meaning its objects are sets with additional structure (i.e. topologies) and its morphisms are functions preserving this structure. There is a natural forgetful functor

to the category of sets which assigns to each topological space the underlying set and to each continuous map the underlying function.