Macro or Micro? Scientists’ pictures baffle our sense of scale. It began when Stephen Young, a geography professor at Salem State University in Massachusetts, tricked his biologist colleague Paul Kelly into thinking a satellite image was one of his electron microscope scans. Can you guess whether they are close-up or very far away? (Photo by Paul Kelly)

These spectacular landscapes may look like something from another planet – but they are in fact colorful salt ponds which stretch for miles. Despite being better known for tech companies and expensive property – San Francisco, California is also home to this vibrant quilt of color spanning the South Bay Area. From eerie green pools to gothic shades of red the surreal landscapes are caused by the organisms or micro-algae living within them. Photo: Aerial view of the salt ponds in San Francisco, California. (Photo by Cris Benton/Caters News)

A set of pictures taken by Kellie Netherwood on the northern-most island located in the Inner Hebrides of Scotland perfectly captures the spirit of the Scots: wild, free, and majestic. It is no wonder that Scottish people fought tooth and nail to gain their independence all throughout their history. The green fields, rocky hills, and the beautiful waterfalls all sing to the spirits of the Scots, instilling pride into everyone who considers this place to be their motherland. However, no matter what your origin may be, you cannot help being fascinated by the beauty of these landscapes, drawn to them as if by a powerful force. (Photo by Kellie Netherwood)

A ballet dancer brushes on blush as she prepares for a street ballet performance in Mexico City, Saturday, July 28, 2018. In this sprawling megalopolis notorious for its clogged streets, a theater company sent out tutu-clad dancers out to delight motorists at snarled intersections with snippets from ballet classics like “The Nutcracker” and “Swan Lake” all in the 58 seconds it takes for the light to go from red to green. (Photo by Emilio Espejel/AP Photo)

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)

Giffords Circus’s show is touring the UK. Established in 2000, Giffords Circus is a small circus company that delivers circus / theatre fusion to the villages and market towns of the south west. It combines dance, comedy, horses and live music in a two-hour show, located on village greens in a small white tent surrounded by handmade burgundy and gold showman’s wagons. Photographer Tom Pilston goes behind the scenes to meet the performers. Here: The incredible, gravity-defying Konjowoch Troupe. (Photo by Tom Pilston/The Guardian)

“Aurora over a glacier lagoon”. A vivid green overheaded aurrora pictured in Iceland's Vatnajokull National Park reflected almost symetrically in Jokulsrlon Glacier lagoon. A complete lack of wind and currrent combin in this sheltred lagoon scene to crete an arresting mirror effect giving the image a sensation of utter stillness. Despite theis there is motion on a suprising scale, as the loops and arcs of the aurora are shaped by the shifting forces of the Earth's magnetic field. James Woodend of Great Britain won the grand prize with the image, beating out more than 2,500 other entries. The Astronomy Photographer of the Year 2014 contest is judged by the Royal Observatory Greenwich and BBC Sky at Night magazine. (Photo by James Woodend/The Astronomy Photographer of the Year 2014 Contest)

Clinging on with sticky toes, a green tree frog sits bravely on its unlikely friend – a large tree python. Curled around the branches of a small coconut tree, the snake appears relatively undisturbed by the bold passenger that has clambered onto its skin. Grown in captivity together, the pair display no signs of aggression or fear, comfortable with their encounters high up in the leafy branches. Photo enthusiast Fahmi Bhs watched in surprise as the frog slowly climbed along the scales of the metre long snake in a zoo in Jakarta, Indonesia. (Photo by Fahmi Bhs/Solent News/SIPA Press)