Space Wallpaper for iPhone 4

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Space Wallpaper for iPhone 4 is a collection of HD (High-Density 640 x 960) photos of the Universe for iPhone 4, iPhone 3G/3GS & iPod Touch. The wallpaper included various spectacular galaxies, nebula, pulsar, planets, deep space, and many many more! All wallpaper are optimized for iPhone 4 with fine details and superb resolution. iPhone 3G/3GS and iPod touch users can also use this application. All wallpaper will automatically shrink to fit the screen of your devices.

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FEATURES

This application has the following features:

★Weekly update of new wallpaper(usually on Sunday, 20-30 wallpaper per week for at least 1 year)
★Ability to add selected wallpaper to a "Favorite Album" for easy browsing later on
★Save any wallpaper into the Camera Roll
★Zoom-in & zoom-out
★Off-line browsing
★You have the option to download the new wallpaper later if you do not want to consume your

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HOW TO USE

To set an image as your iPhone wallpaper, follow 3 simple steps:
1 - Choose your favorite wallpaper (hint: single tapping on a wallpaper will give you a full-screen view)
2 - Press the "Save" button on the lower right corner
3 - Go to your Camera Roll, find the wallpaper, press the icon on the lower left corner and select "Set as Wallpaper"

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About our Universe

Current interpretations of astronomical observations indicate that the age of the universe is 13.75 ±0.17 billion years, and that the diameter of the observable universe is at least 93 billion light years, or 8.80 × 10^26 meters.

The BIG BANG was the event which led to the formation of the universe, according to the prevailing cosmological theory of the universe's early development (known as the Big Bang theory or Big Bang model). According to the Big Bang model, the universe, originally in an extremely hot and dense state that expanded rapidly, has since cooled by expanding to the present diluted state, and continues to expand today. Based on the best available measurements as of 2010, the original state of the universe existed around 13.7 billion years ago, which is often referred to as the time when the Big Bang occurred. The theory is the most comprehensive and accurate explanation supported by scientific evidence and observations.

A NEBULA is an interstellar cloud of dust, hydrogen gas, helium gas and other ionized gases. Nebulae often form star-forming regions, such as in the Eagle Nebula. This nebula is depicted in one of NASA's most famous images, the "Pillars of Creation". In these regions the formations of gas, dust and other materials "clump" together to form larger masses, which attract further matter, and eventually will become big enough to form stars. The remaining materials are then believed to form planets, and other planetary system objects.

PULSARS are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation. The radiation can only be observed when the beam of emission is pointing towards the Earth. This is called the lighthouse effect and gives rise to the pulsed nature that gives pulsars their name. Because neutron stars are very dense objects, the rotation period and thus the interval between observed pulses is very regular. For some pulsars, the regularity of pulsation is as precise as an atomic clock.

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