A instructor (2nd L) from the Philippine Mermaid Swimming Academy assists participants of a monofin swimming summer workshop as they practise floating in the water of a private pool in Paranaque city, metro Manila April 5, 2014. The Philippine Mermaid Swimming Academy workshops, which were originally conducted on the beaches of Boracay Island, central Philippines, currently cost 1,800 pesos per person ($40) for a two-hour session. (Photo by Romeo Ranoco/Reuters)

The Royal Observatory just announced its Astronomy Photographer Of The Year 2013 winners. Australian photographer Mark Gee was chosen among a thousand amateur and professional photographers around the globe to win the top title. His work is part of an exhibition of the winning photographers, which opened on Sept. 19 at the Royal Observatory Greenwich. The Royal Observatory shared with us the winners and notable mentions of the competition. Their descriptions of the prizewinners can be found below the images.

Everyone wants to get something for nothing - whether it's a lucky upgrade that means you can turn left when you get on a plane instead or heading off into the economy seats, or even getting a few extra features thrown in for free when you buy a new car.

As some of the sharpest businesses around, no-one understands this quite as well as casinos and that's why they all have a system that they call comps. It's short for "complimentary offers" and these are special treats specially designed to reward you for your loyalty to the casino in question. They're basically bonuses.

“The Wii U is an upcoming home video game console by Nintendo, and the direct successor to the Wii. The system is expected to be released in 2012 and was unveiled during Nintendo's press conference at the Electronic Entertainment Expo 2011 on June 7, 2011. The Wii U is the first Nintendo console to produce 1080p high-definition graphics, and features a new controller with an embedded touchscreen. The controller allows a player to continue a gaming session by displaying the game even when the television is off. The system will be fully backwards compatible with Wii, and Wii U games can support compatibility with Wii peripherals, such as the Wii Remote and Wii Balance Board”. – Wikipedia

Photo: The new Nintendo game console Wii U is displayed at the Nintendo booth during the Electronic Entertainment Expo on June 7, 2011 in Los Angeles, California. The Wii U will have HD graphics, a controller with a 6.2 inch touchscreen and be compatible with all other Wii accessories. (Photo by Kevork Djansezian/Getty Images)

Ally Brooke, from left, Dinah-Jane Hansen, Camila Cabello, Lauren Jauregui and Normani Hamilton of Fifth Harmony, perform “Work From Home” at the Billboard Music Awards at the T-Mobile Arena on Sunday, May 22, 2016, in Las Vegas. (Photo by Chris Pizzello/Invision/AP Photo)