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.

Satellite (software)

In computing, Red Hat Satellite, an open-source systems-management application, allows system administrators to deploy, manage and monitor Red Hat Enterprise Linux and Solaris hosts. One can think of Satellite as a local version of Red Hat Network.

An organisation's Satellite server registers with Red Hat Network and downloads relevant software into Satellite's software channels. The organisation's hosts then register against the local Satellite server, instead of directly against Red Hat Network.

This allows the organisation to control which versions of software it makes available for its hosts, as well as making additional software within the local network.

Recent versions of Red Hat Satellite emphasise virtualization and add features, particularly XML-RPC API features for deploying and managing virtual hosts.

Deploy

Satellite offers numerous methods for deploying hosts, including simple kickstart, bare metal install and re-imaging. Current versions of Satellite support kickstart using Cobbler as an underlying framework. PXE Boot, and Koan are methods that can be used to implement bare metal installs and re-imaging of hosts.

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