Silhouette, 剪影

A sailboat is silhouetted by the rising sun, Friday, November 13, 2015, as it passes by the coast of Surfside, Fla. (Photo by Wilfredo Lee/AP Photo)

Construction workers put the finishing touches to Christmas lights on the Royal Mile on November 26, 2015 in Edinburgh,Scotland. The construction named the 'Street of Light' is having the finishing touches put in place, the installation consists of twenty four arches and has more than 60,000 lights, secured to a large aluminium truss. (Photo by Jeff J Mitchell/Getty Images)

In this photo made with a long exposure, blades on wind turbines spin to produce electricity on Tuesday, December 8, 2015, at a wind farm near Ellsworth, Kan. (Photo by Charlie Riedel/AP Photo)

A Saudi man trains his son to ride a horse in a desert near Tabuk, Saudi Arabia, December 11, 2015. (Photo by Mohamed Al Hwaity/Reuters)

A passenger plane flies through aircraft contrails in the skies near Heathrow Airport in west London, in this April 12, 2015 file photo. (Photo by Toby Melville/Reuters)

Migrating starlings fly past electricity pylons in the Kent countryside, Britain in this October 26, 2015 file photo. (Photo by Dylan Martinez/Reuters)
Simply Some Photos: Silhouettes
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The supermoon rises behind Glastonbury Tor on September 27, 2015 in Glastonbury, England. Tonight's supermoon, so called because it is the closest full moon to the Earth this year, is particularly rare as it coincides with a lunar eclipse, a combination that has not happened since 1982 and won't happen again until 2033. (Photo by Matt Cardy/Getty Images)
Pictures of the Year 2015, Part 1/7
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People watch the sun set from the observatory deck of the Marina Bay Sands hotel in Singapore October 5, 2015. Slash-and-burn agriculture in neighboring Indonesia blanketed Singapore in a choking haze. (Photo by Edgar Su/Reuters)
Pictures of the Year 2015, Part 2/7
http://avax.news/fact/Pictures_of_the_Year_2015_Part_2.html

A total solar eclipse is seen in Longyearbyen on Svalbard, Norway, March 20, 2015. A partial eclipse was visible on Friday, the first day of northern spring, across parts of Africa, Europe and Asia. The total eclipse of the sun was only visible in the Faroe Islands and the Norwegian archipelago of Svalbard in the Arctic Ocean. (Photo by Jon Olav Nesvold/Reuters/NTB Scanpix)
Pictures of the Year 2015, Part 7/7
http://avax.news/fact/Pictures_of_the_Year_2015_Part_7.html