日期:2016/03/04Planetary 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.分辨率:3840×2400设备:
日期:2016/03/04Got up early and got my feet wet for this shot. Acqua Alta (about 30 cm) on Piazza San Marco in November 2014.分辨率:3840×2400设备:Nikon D800, Nikon AF-S NIKKOR 14-24mm f/2.8G ED.45.4337, 12.3373
日期:2016/03/04Baishi Mountain is located in Taiyuan county, west region of China's Hebei province. Its main ridge line is over 7,000 meters long and the highest peak is 2,096 meters high. The fog at high altitudes make the mountain a fairyland on Earth.分辨率:3840×2400设备:
日期:2016/03/04Although 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.分辨率:3840×2400设备:
日期:2016/03/04Taken in the Warehouse District in Hamburg, Germany. This perspective is well known and very popular for photographers in Hamburg. Nevertheless, I do hope you enjoy this wallpaper!分辨率:3840×2400设备:Nikon D600, Sigma 10-20mm F4-5.6 EX DC HSM.
日期:2016/03/04Some say Ireland is the land of rainbows. Maybe its because there is a lot of rain, maybe its because there are a lot of leprechauns. 分辨率:3840×2400设备:Canon EOS 5D Mark III, Canon EF 24-70mm f2.8L II USM.
日期:2016/01/20Osthafenbrücke - The newest bridge in Frankfurt am Main at night.分辨率:3840×2400设备:Sony SLT-A55, Sigma 10-20mm F3.5 EX DC HSM.50.1072, 8.7114