Sky

The sky (or celestial dome) is everything that lies above the surface of the Earth, including the atmosphere and outer space.

In the field of astronomy, the sky is also called the celestial sphere. This is viewed from Earth's surface as an imaginary dome where the sun, stars, planets, and the moon are seen to be traveling. The celestial sphere is conventionally divided into regions called constellations. Usually, the term sky is used informally as the point of view from the Earth's surface; however, the meaning and usage can vary. In some cases, such as in discussing the weather, the sky refers to only the lower, more dense portions of the atmosphere.

During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. During the day, the Sun can be seen in the sky unless obscured by clouds. In the night sky (and to some extent during the day) the moon, planets and stars are visible in the sky. Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae. Lightning and precipitation can also be seen in the sky during storms. Birds, insects, aircraft, and kites are often considered to fly in the sky. Due to human activities, smog during the day and light pollution during the night are often seen above large cities.

TheSky (astronomy software)

TheSky is an astronomy application designed to be used for educational, observational purposes. TheSky provides an extensive feature set including the following:

Origin (mathematics)

In mathematics, the origin of a Euclidean space is a special point, usually denoted by the letter O, used as a fixed point of reference for the geometry of the surrounding space.

Cartesian coordinates

In a Cartesian coordinate system, the origin is the point where the axes of the system intersect. The origin divides each of these axes into two halves, a positive and a negative semiaxis. Points can then be located with reference to the origin by giving their numerical coordinates—that is, the positions of their projections along each axis, either in the positive or negative direction. The coordinates of the origin are always all zero, for example (0,0) in two dimensions and (0,0,0) in three.

Other coordinate systems

In a polar coordinate system, the origin may also be called the pole. It does not itself have well-defined polar coordinates, because the polar coordinates of a point include the angle made by the positive x-axis and the ray from the origin to the point, and this ray is not well-defined for the origin itself.

Origin (digital distribution software)

Origin is an online gaming, digital distribution and digital rights management (DRM) platform developed by Electronic Arts that allows users to purchase games on the internet for PC and mobile platforms, and download them with the Origin client (formerly EA Download Manager, EA Downloader and EA Link). Origin for Mac has been available since February 8, 2013.

Origin features social features like profile management, networking with friends with chat and direct game joining along with an in-game overlay, streaming via TwitchTV and sharing of game library and community integration with networking sites like Facebook, Xbox Live, PlayStation Network, and Nintendo Network. Electronic Arts has stated that it wanted Origin to match Valve's Steam service, Origin's leading competitor, by the end of March 2012, by adding cloud game saves, auto-patching, achievements and rewards, and cross-platform releases. Origin has over 50 million registered users.

Components

Origin (Evanescence album)

Origin is the first demo album by the alternative metal band Evanescence. It was released in 2000 on Bigwig Enterprises. Only 2,500 album copies were pressed and sold at the band's live concerts in Little Rock, Arkansas, and on the Bigwig Enterprises website.

Background

Due to the limited numbers pressed and the band's success, copies of the album were being sold for US$400 on eBay following Fallen's release, and it became nearly impossible to find an original copy. Although it is commonly referred to as a full-length album, lead vocalist and co-founder Amy Lee refers to it as a "dressed up" demo CD, and urges fans to simply download the album, rather than purchase it. It contains earlier versions of "Whisper", "Imaginary", and "My Immortal", which appeared on the band's debut studio album, Fallen, as well as a re-recorded version of the track "Where Will You Go", which previously appeared on the Evanescence EP released in 1998. Three tracks were omitted: "Catherine", "Spanish", and "Listen to the Rain". "Listen to the Rain" was planned to be sandwiched between the tracks "Eternal" and "Demise", but after it was cut, "Eternal" and "Demise" were merged into one track.

Sky+

Sky+, or Sky Plus, is a personal video recorder (PVR) service for Sky in the UK. Launched in mid 2001, it allows the user to record, pause and instantly rewind live TV. The system performs these functions using an internal hard drive inside the Sky+ set top box. Its chief competitors in the UK market are the Freeview+, Freesat+, BT Vision, and Virgin Media's V+.

In the Republic of Ireland, Sky+ competes with UPC's Digital+ box which offers 160GB or 250GB of storage. As of 30 September 2009, there were 5.9 million customers with Sky+.

The £10 per month subscription fee was discontinued for subscribers from 1 July 2007, but will continue for Freesat from Sky use.

Technical information

Sky (building)

Sky (also known as 605 West 42nd Street) is a mixed-use building in Midtown Manhattan developed by the Moinian Group. The building was originally known as "Atelier II" due to its proximity to another Moinian rental, Atelier. The building contains residences and retail space. The building is one of two major developments by Moinian in the Special Hudson Yards District, the other being 3 Hudson Boulevard. At 656 ft., is the 59th tallest building in New York City.

History and construction

The Moinian Group purchased the site in 2005. It originally held a gas station and a parking facility. The project first broke ground in 2008, but construction was stalled due to the recession from 2009 until 2012, and the project was dubbed, like several nearby developments, a "zombie project" because Moinan retained ownership of the site but did not continue development. Activity resumed with a redesign by David Rockwell, replacing the original by Costas Kondylis. Construction began again in 2013, and was completed by the end of 2015.Tishman Realty & Construction was the firm responsible for the construction of the building.