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High-resolution desktop wallpaper Feathery Ridges by NASA/JPL-Caltech/Univ. of Arizona
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Feathery Ridges

January 27th, 2016

This HiRISE image shows a valley filled with an assortment of linear ridges. These ridges are often referred to as transverse aeolian ridges, or TAR, and they take a variety of forms. Here they sit at right angles to the direction of the valley, because the topography funnels the wind along the trough.

At this location, some of the TAR have secondary structures, likely small ripples. It is common for sand dunes to be covered in small ripples, often with different orientations that may be shaped by winds redirected by the larger dunes. Here the secondary structures have an unusual radiating/converging pattern, giving the TAR here a feathery appearance.

HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

Image Credit: NASA/JPL-Caltech/Univ. of Arizona

High-resolution desktop wallpaper Mather Point by coolios
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Mather Point

January 30th, 2016

Brisk January morning at Mather Point, Grand Canyon.

Adobe Photoshop Lightroom 5, Adobe Photoshop CS6.

Nikon D7000, Nikon AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR.

High-resolution desktop wallpaper The Galactic Center by NASA Images
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The Galactic Center

January 31st, 2016

This composite image combines a near-infrared view from the Hubble Space Telescope, an infrared view from the Spitzer Space Telescope, and an X-ray view from the Chandra X-ray Observatory into one multi-wavelength picture.

It features the spectacle of stellar evolution: from vibrant regions of star birth, to young hot stars, to old cool stars, to seething remnants of stellar death called black holes. This activity occurs against a fiery backdrop in the crowded, hostile environment of the galaxy's core, the center of which is dominated by a supermassive black hole nearly four million times more massive than our Sun. Permeating the region is a diffuse blue haze of X-ray light from gas that has been heated to millions of degrees by outflows from the supermassive black hole as well as by winds from massive stars and by stellar explosions. Infrared light reveals more than a hundred thousand stars along with glowing dust clouds that create complex structures including compact globules, long filaments, and finger-like "pillars of creation," where newborn stars are just beginning to break out of their dark, dusty cocoons.

Credit: NASA, ESA, SSC, CXC, and STScI

High-resolution desktop wallpaper Jet in Carina by NASA, ESA, and the Hubble SM4 ERO Team
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Jet in Carina

February 6th, 2016

A 3-light-year-long pillar, bathed in the glow of light from hot, massive stars to the top of the image. Scorching radiation and fast winds (streams of charged particles) from these stars are sculpting the pillar and causing new stars to form within it. Streamers of gas and dust can be seen flowing off the top of the structure.

Nestled inside this dense structure are fledgling stars. They cannot be seen in this image because they are hidden by a wall of gas and dust. Although the stars themselves are invisible, one of them is providing evidence of its existence. Thin puffs of material can be seen traveling to the left and to the right of a dark notch in the center of the pillar. The matter is part of a jet produced by a young star. Farther away, on the left, the jet is visible as a grouping of small, wispy clouds. A few small clouds are visible at a similar distance on the right side of the jet. Astronomers estimate that the jet is moving at speeds of up to 850,000 miles an hour. The jet's total length is about 10 light-years.

Composed of gas and dust, the pillar resides in a tempestuous stellar nursery called the Carina Nebula, located 7,500 light-years away in the southern constellation Carina.

Credit: NASA, ESA, and the Hubble SM4 ERO Team

High-resolution desktop wallpaper The Helix Nebula's Iridescent Glory by NASA, NOAO, ESA, the Hubble Helix Nebula Team, M. Meixner (STScI), and T.A. Rector (NRAO)
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The Helix Nebula's Iridescent Glory

February 11th, 2016

Planetary nebulae like the Helix are sculpted late in a Sun-like star's life by a torrential gush of gases escaping from the dying star. They have nothing to do with planet formation, but got their name because they look like planetary disks when viewed through a small telescope. With higher magnification, the classic "donut-hole" in the middle of a planetary nebula can be resolved. Based on the nebula's distance of 650 light-years, its angular size corresponds to a huge ring with a diameter of nearly 3 light-years. That's approximately three-quarters of the distance between our Sun and the nearest star.

The Helix Nebula is a popular target of amateur astronomers and can be seen with binoculars as a ghostly, greenish cloud in the constellation Aquarius. Larger amateur telescopes can resolve the ring-shaped nebula, but only the largest ground-based telescopes can resolve the radial streaks. After careful analysis, astronomers concluded the nebula really isn't a bubble, but is a cylinder that happens to be pointed toward Earth.

Credit: NASA, NOAO, ESA, the Hubble Helix Nebula Team, M. Meixner (STScI), and T.A. Rector (NRAO).

High-resolution desktop wallpaper Timeless Bond by Destin
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Timeless Bond

February 24th, 2016

Although there is certainly a poetry to the world when it's alive and full of people, there is simply nothing that can possibly compare to that same world when no one else is around. It is stripped of the extraneous energy and second hand emotion that occurs when you're lost in a crowd (even if that crowd is small). You're seeing it raw… bare. It's an otherworldly experience to say the least.

Now add sunrise to the mix. That's the time when the earth itself wakes up. Shades of understated grey give way to hues of lilac, violet, and lemon that simply don't exist later in the day. It is the visual equivalent of listening to an orchestra tuning up just before the performance of a lifetime.

This shot features a private boathouse along the main river of Perth. (If you've visited the area, you may know it well!)

At sunrise on this crisp winter morning, it appeared wise… knowing. A loan witness to this beautiful world at this extraordinary time of day, there at the end of that simple, weathered pier.

Camera: GX617; Film: Velvia 50 Slide; Scan: Heidelberg Tango; Post-processing: None.

High-resolution desktop wallpaper Quiet Sunset by Nitrogliserin
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Quiet Sunset

May 9th, 2016

Sunset in Alta, Norway.

Sigma 17-70C

Pentax K-3.

Photo Settings: 40mm, f/5, 1/80 second, ISO 1600.

Map: 69.9614, 23.2414

High-resolution desktop wallpaper Hubble's Sharpest View of the Orion Nebula by NASA Images
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High-resolution desktop wallpaper Sunset at Hug Point by jdphotopdx
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Sunset at Hug Point

June 1st, 2016

A friend of mine recommended I check out Hug Point on the Oregon Coast. I didn't make it in time to hike to the most popular spot so I made the most out of the beach near the parking area for sunset. I ended up getting some great shots!

Adobe Lightroom CC.

Canon EOS 6D, Canon EF 24-70mm f2.8L II USM.

High-resolution desktop wallpaper Coulee by Philippe Clairo
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Coulee

August 1st, 2016

Taken at Lake Louise, Alberta, Canada while hiking to the other end of the lake. The colour of the water, canoes and trees made for a nice composition.

Adobe Lightroom CS.

Sony Alpha NEX-7, Sony E PZ 18-200mm F3.5-6.3 OSS.

Photo Settings: 47mm, f/8, 1/125 second, ISO 200.

Map: 51.4121, 116.2332

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