After the success of their Superman series in 2013, the Canadian Mint debuted a new set of coins honouring the Man of Steel at this year's Fan Expo in Toronto. The collection is made up of three silver coins worth $10, $15 and $20, and a gold coin worth $100. Photo: Close-up of the $10 silver coin in the new Superman series from the Royal Canadian Mint. (Photo by The Canadian Press)

Axel, a research prototype rover for exploring the Moon, Mars and other planets, is remotely driven over rocks as engineers from Jet Propulsion (JPL) and grad students from Caltech (California Institute of Technology) demonstrate its mobile over the steep and rocky grounds of the JPL Mars Yard on January 14, 2009 in Pasadena, California. The rover is capable of descending cliffs or into craters and returning by a cable tethered to its starting point. Development of the Axel rover is a point effort funded by NASA Exploration Systems Mission Directorate (ESMD) and lead by Principal Investigator Issa Newnas and Co-Investigator and Caltech professor of mechanical engineering bio engineering Joel Burdick. (Photo by David McNew/Getty Images)

Figures from Antony Gormley's “Field For The British Isles” adorns an exhibition space in St Helen's College in the town of it's creation 15 years ago, June 23, 2008, St Helens, England. The installation of over 40,000 clay figures has returned to the place where it was made by local people from local clay. Artist Antony Gormley describes his creation as “25 tons of clay energised by fire, sensitised by touch and made conscious by being given eyes ... a field of gazes which looks at the observer making him or her its subject”. (Photo by Christopher Furlong/Getty Images)

A stork-billed kingfisher (Pelargopsis capensis) is seen perched on a tree during monsoon rain on July 25, 2016 in Bintan, Indonesia. The stork-billed kingfisher is a tree species which is widely but sparsely distributed in the tropical Indian subcontinent and Southeast Asia, from India to Indonesia. This kingfisher is resident throughout its range. It is very large, measuring 35 to 38 cm (14 to 15 in) in length. The adult has a green back, blue wings and tail, and grey head. (Photo by Sijori Images/Barcroft Images)

Cheerleaders from the “All Japan Cheer Organization” perform in protective masks due to COVID-19, to cheer people up in front of Shimbashi Station, one day before the start of the Tokyo 2020 Olympics in Tokyo, Japan on July 22, 2021. (Photo by Androniki Christodoulou/Reuters)

A Kathakali dancer in Kochi, India, performs a traditional story play on August 10, 2023. Kerala Kathakali originated in the Early 17th Century. A story acted that contains Mime, Acting Drama and music, The Stories are mainly taken from Hindu Mythology and Puranas. (Photo by Paul Quezada-Neiman/Alamy Live News)

Nepal's Kumari, or living goddess, adjusts her ornament as she watches the Rato Machindranath chariot Festival in Lalitpur, Nepal, Friday, April 24, 2015. Nepal's living goddesses are young pre-pubescent girls considered by devotees to be incarnations of a Hindu goddess. Selected as toddlers, living goddesses usually keep their positions until they reach puberty. (Photo by Niranjan Shrestha/AP Photo)

A Colombian flower grower selects a rose for a bouquet ahead of Valentine's Day in Subachoque, February 2, 2015. Colombia is the world's second-largest flower exporter behind the Netherlands. The Andean country exports around 500 million flowers to the U.S. for Valentine's Day, according to the Colombia Flower Growers Association. (Photo by John Vizcaino/Reuters)