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Hubble's richest photo of the Universe just "landed" - i.m/u.r

Hubble’s richest photo of the Universe just “landed”

Hubble photo of the Universe

One of the richest photos ever composed/taken has just landed, directly from Hubble: a portrait of the universe, depictingA�some 10,000 of the 100,000,000 galaxies there are estimated to exist.

Launched in 1990, the Hubble Space TelescopeA�has provided mankind with great advances, both in our view of space and the universe itself.

Unlike ground-based telescopes, Hubble orbits EarthA�and its position above the atmosphereA�-A�a layer that refracts,A�distorts and partially blocks the light reaching our planetA�-A�gives it a “cleaner” view of the universe.

Hubble floating above Earth in 2002

NASA holds a special place – within a full Hubble-dedicated website -A�for space enthusiasts, amateur and even professional astronomers: a photo gallery of Hubble’s picturesA�of the Universe.

This new one is not an exception, quiteA�au contraire.

 

Astronomers using NASA’s Hubble Space Telescope have assembled a comprehensive picture of the evolving universe a�� among the most colorful deep space images ever captured by the 24-year-old telescope.

Researchers say the image, from a new study called the Ultraviolet Coverage of the Hubble Ultra Deep Field, provides the missing link in star formation. The Hubble Ultra Deep Field 2014 image is a composite of separate exposures taken in 2003 to 2012 with Hubble’s Advanced Camera for Surveys and Wide Field Camera 3.

Astronomers previously studied the Hubble Ultra buy buspar medication Deep Field (HUDF) in visible and near-infrared light in a series of images captured from 2003 to 2009. The HUDF shows a small section of space in the southern-hemisphere constellation Fornax. Now, using ultraviolet light, astronomers have combined the full range of colors available to Hubble, stretching all the way from ultraviolet to near-infrared light. The resulting image a�� made from 841 orbits of telescope viewing time a�� contains approximately 10,000 galaxies, extending back in time to within a few hundred million years of the big bang.

Prior to the Ultraviolet Coverage of the Hubble Ultra Deep Field study of the universe, astronomers were in a curious position. Missions such as NASA’s Galaxy Evolution Explorer (GALEX) observatory, which operated from 2003 to 2013, provided significant knowledge of star formation in nearby galaxies. Using Hubble’s near-infrared capability, researchers also studied star birth in the most distant galaxies, which appear to us in their most primitive stages due to the significant amount of time required for the light of distant stars to travel into a visible range. But for the period in between, when most of the stars in the universe were born a�� a distance extending from about 5 billion to 10 billion light-years a�� they did not have enough data.

“The lack of information from ultraviolet light made studying galaxies in the HUDF like trying to understand the history of families without knowing about the grade-school children,” said principal investigator Harry Teplitz of Caltech in Pasadena, California. “The addition of the ultraviolet fills in this missing range.”

Ultraviolet light comes from the hottest, largest, and youngest stars. By observing at these wavelengths, researchers get a direct look at which galaxies are forming stars and where the stars are forming within those galaxies.

Studying the ultraviolet images of galaxies in this intermediate time period enables astronomers to understand how galaxies grew in size by forming small collections of very hot stars. Because Earth’s atmosphere filters most ultraviolet light, this work can only be accomplished with a space-based telescope.

“Ultraviolet surveys like this one using the unique capability of Hubble are incredibly important in planning for NASA’s James Webb Space Telescope,” said team member Rogier Windhorst of Arizona State University in Tempe. “Hubble provides an invaluable ultraviolet-light dataset that researchers will need to combine with infrared data from Webb. This is the first really deep ultraviolet image to show the power of that combination.”

Hubble photo of the Universe

This image is madeA�available from the Hubble’sA�website, in a variety of sizes and formats.
The largest JPEG image hasA�a resolution ofA�2300 x 2100 pixels.

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