A long exposure view of Half Dome from Glacier Point (the same point of view used on the California state quarter). I love how surreal long exposures can be and this evening brought us some deep colors late in the evening. It was actually dark enough that we needed flashlights to walk safely.

Adobe Lightroom 4.3.

Nikon D80, Nikon AF-S DX Zoom-NIKKOR 18-70mm f/3.5-4.5G IF-ED.

Photo Settings: 18mm, f/4, 30 seconds, ISO 100.

Map: 37.7308, -119.5728

Shot near Jasper, Canada in May 2014.

Those of you interested in the post-processing performed on this image can check out this short video: http://youtu.be/kDCDXZOUFOI

Samsung NX10.

Photo Settings: 55mm, f/7, 1/160 second, ISO 200.

This is a shot at a river crossing on the Shiratani Unsuikyo trail in Yakushima, Japan. The river often floods, disallowing passage of this area. Taken in April 2014.

Adobe Lightroom.

Sony Zeiss Sonnar T* FE 35mm f2.8 ZA.

Sony Alpha 7R.

Photo Settings: 35mm, f/8, 15 seconds, ISO 50.

The beach of Milos on Lefkada is only accessible by boat or a 20-minute hike over a mountain. This means you can enjoy the sunset all by yourself.

Adobe Photoshop Lightroom 4, Adobe Photoshop CS5.

Canon EOS 5D Mark II, Canon EF 24-70mm f/2.8L USM.

Photo Settings: 43mm, f/14, 1/2 second, ISO 50.

From my flat in Barcelona I noticed some flashes outside. After investigating I realised there was a giant storm over the Mediterranean. It was far enough away to be completely silent. A perfect photo opportunity.

The photo was saturated yellow because of the light pollution from the street lights below so I changed the temperature to what it really looked like.

Canon EOS Rebel T2i, Canon EF-S 55-250mm f/4-5.6 IS.

Photo Settings: 55mm, f/4, 119 seconds, ISO 100.

Map: 41.2861, 3.3931

A modern sod-house in Iceland, where roofs are still made like they were two hundred years before.

Taken on my trip to Iceland in August, 2014.

Olympus OM-D E-M5.

It was raining all day but I decided to go out shooting... This kind of weather usually creates beautiful lighting conditions when the Sun is setting. I was very lucky because it stopped raining just about five minutes before this shot was taken.

Adobe Lightroom 4, Adobe Photoshop CS6.

Nikon D700, Tokina AT-X Pro 11-16mm f/2.8 DX.

Big Sur, California.

Adobe Photoshop CS6.

Nikon D810.

Photo Settings: 24mm, f/22, 1/80 second, ISO 200.

Another photo from my trip in Australia. This picture has been taken on Whitehaven Beach, early in the morning. This is clearly one of the most beautiful places in the world.

Apple Aperture 3.

Canon EOS Rebel XSi, Canon EF-S 15-85mm f/3.5-5.6 IS USM.

Photo Settings: 15mm, f/10, 1/250 second, ISO 100.

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).