A girl runs as she plays in a fountain at a shopping mall in Beijing, Friday, June 23, 2023. Authorities issued a rare red alert for high temperatures in parts of China's capital on Friday, the highest level of warning, as highs were expected to once again climb to around 40 degrees Celsius (104 degrees Farenheit). (Photo by Mark Schiefelbein/AP Photo)

A woman reacts during the annual tomato fight fiesta called “Tomatina”, tomato fight fiesta, in the village of Bunol near Valencia, Spain, Wednesday, August 30, 2023. Thousands gather in this eastern Spanish town for the annual street tomato battle that leaves the streets and participants drenched in red pulp from 120,000 kilos of tomatoes. (Photo by Alberto Saiz/AP Photo)

A woman prays during a Sarwan Brata (fast) offering to Lord Shiva, the Hindu god of creation and destruction, at the Pashupatinath Temple in Kathmandu, Nepal, 21 July 2025. Nepalese Hindu women wearing red, yellow and green attire, flock to temples during Sarwan month to pray for a long and prosperous life for their husbands, or to find a good husband. (Photo by Narendra Shrestha/EPA)

Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. It streaks white, and its Mohs hardness varies between 3.5 and 4. Its specific gravity is between 3.5 and 3.7. It crystallizes in the trigonal system, and cleaves with rhombohedral carbonate cleavage in three directions.

A fog bow is a similar phenomenon to a rainbow; however, as its name suggests, it appears as a bow in fog rather than rain. Because of the very small size of water droplets that cause fog—smaller than 0.05 millimeters (0.0020 in)—the fog bow has only very weak colors, with a red outer edge and bluish inner edge.

Eduardo Salles (Mexico City, 1987) is advertiser, designer, illustrator, writer and professor at the Miami Ad School. And a professional procrastinator!, he says. Ex Creative Director of Nike, Kit Kat and Red Cross Mexico. He has won awards as diverse as Cannes Lions (advertising), Walter Reuters prize (journalism) and Juan Rulfo Short Story Award (literature).

NASA says it could be another 20 years before humans touch down on Mars, but in a sense, the Mars Society has been exploring the red planet for more than a decade – in Utah. Photo: Csilla Orgel, a geologist of Crew 125 EuroMoonMars B mission, makes her way back to the Mars Desert Research Station (MDRS) in the Utah desert March 3, 2013. The MDRS aims to investigate the feasibility of a human exploration of Mars and uses the Utah desert's Mars-like terrain to simulate working conditions on the red planet. Scientists, students and enthusiasts work together developing field tactics and studying the terrain. All outdoor exploration is done wearing simulated spacesuits and carrying air supply packs and crews live together in a small communication base with limited amounts of electricity, food, oxygen and water. Everything needed to survive must be produced, fixed and replaced on site. (Photo by Jim Urquhart/Reuters)

This image is NGC 6543 known as the Cat's Eye Nebula as it appears to the Chandra X-Ray Observatory and Hubble Telescope. A planetary nebula is a phase of stellar evolution that the sun should experience several billion years from now, when it expands to become a red giant and then sheds most of its outer layers, leaving behind a hot core that contracts to form a dense white dwarf star. This image was released October 10, 2012. (Photo by J. Kastner/NASA/CXC/RIT)