Galaxy Wallpaper HD

免費銀河壁紙和HD背景

This is a MUST have app for every Galaxy fan! Download this amazing Galaxy wallpaper app now on your android phone!

Who does not want a beautiful image of a Galaxy on his mobile background? This app allows you to easily set images as wallpaper. Sharing your favorites with your friends also does not take any effort. This app contains the nicest and most beautiful Galaxy pictures and everything in HD so it is the best quality you can find. Download this great app now and enjoy your new backgrounds, wallpapers and images.

This app contains images off:

- Galaxy backgrounds

- Galaxy images

- Galaxy pictures

- Galaxy wallpaper

- Galaxy lockscreen

- And everything related

Feutures of app:

- Easily set as background

- Share with friends

- All HD pictures

If you ever have a request for a particular wallpaper app, do not hesitate to contact me.

Information about the Galaxy:

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few hundred million (108) stars to giants with one hundred trillion (1014) stars, each orbiting its galaxy's center of mass.

Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular. Many galaxies are thought to have black holes at their active centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As of March 2016, GN-z11 is the oldest and most distant observed galaxy with a comoving distance of 32 billion light-years from Earth, and observed as it existed just 400 million years after the Big Bang.

Recent estimates of the number of galaxies in the observable universe range from 200 billion (2×1011)[7] to 2 trillion (2×1012) or more, containing more stars than all the grains of sand on planet Earth Most of the galaxies are 1,000 to 100,000 parsecs in diameter and separated by distances on the order of millions of parsecs (or megaparsecs).

The space between galaxies is filled with a tenuous gas having an average density of less than one atom per cubic meter. The majority of galaxies are gravitationally organized into groups, clusters, and superclusters. At the largest scale, these associations are generally arranged into sheets and filaments surrounded by immense voids. The largest structure of galaxies yet recognised is a cluster of superclusters that has been named Laniakea.