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Spirit_(rover)

Spirit, also known as MER-A (Mars Exploration Rover – A) or MER-2, is a Mars robotic rover, active from 2004 to 2010. Spirit was operational on Mars for 2208 sols or 3.3 Martian years (2269 days; 6 years, 77 days). It was one of two rovers of NASA's Mars Exploration Rover Mission managed by the Jet Propulsion Laboratory (JPL). Spirit landed successfully within the impact crater Gusev on Mars at 04:35 Ground UTC on January 4, 2004, three weeks before its twin, Opportunity (MER-B), which landed on the other side of the planet. Its name was chosen through a NASA-sponsored student essay competition. The rover got stuck in a "sand trap" in late 2009 at an angle that hampered recharging of its batteries; its last communication with Earth was on March 22, 2010.
The rover completed its planned 90-sol mission (slightly less than 92.5 Earth days). Aided by cleaning events that resulted in more energy from its solar panels, Spirit went on to function effectively over twenty times longer than NASA planners expected. Spirit also logged 7.73 km (4.8 mi) of driving instead of the planned 600 m (0.4 mi), allowing more extensive geological analysis of Martian rocks and planetary surface features. Initial scientific results from the first phase of the mission (the 90-sol prime mission) were published in a special issue of the journal Science.On May 1, 2009 (5 years, 3 months, 27 Earth days after landing; 21 times the planned mission duration), Spirit became stuck in soft sand. This was not the first of the mission's "embedding events" and for the following eight months NASA carefully analyzed the situation, running Earth-based theoretical and practical simulations, and finally programming the rover to make extrication drives in an attempt to free itself. These efforts continued until January 26, 2010, when NASA officials announced that the rover was likely irrecoverably obstructed by its location in soft sand,
though it continued to perform scientific research from its current location.The rover continued in a stationary science platform role until communication with Spirit stopped on March 22, 2010 (sol 2208). JPL continued to attempt to regain contact until May 24, 2011, when NASA announced that efforts to communicate with the unresponsive rover had ended, calling the mission complete. A formal farewell took place at NASA headquarters shortly thereafter.

Linus_Carl_Pauling

Linus Carl Pauling ( PAW-ling; February 28, 1901 – August 19, 1994) was an American chemist, biochemist, chemical engineer, peace activist, author, and educator. He published more than 1,200 papers and books, of which about 850 dealt with scientific topics. New Scientist called him one of the 20 greatest scientists of all time. For his scientific work, Pauling was awarded the Nobel Prize in Chemistry in 1954. For his peace activism, he was awarded the Nobel Peace Prize in 1962. He is one of five people to have won more than one Nobel Prize (the others being Marie Curie, John Bardeen, Frederick Sanger, and Karl Barry Sharpless). Of these, he is the only person to have been awarded two unshared Nobel Prizes, and one of two people to be awarded Nobel Prizes in different fields, the other being Marie Curie.Pauling was one of the founders of the fields of quantum chemistry and molecular biology. His contributions to the theory of the chemical bond include the concept of orbital hybridisation and the first accurate scale of electronegativities of the elements. Pauling also worked on the structures of biological molecules, and showed the importance of the alpha helix and beta sheet in protein secondary structure. Pauling's approach combined methods and results from X-ray crystallography, molecular model building, and quantum chemistry. His discoveries inspired the work of Rosalind Franklin, James Watson, Francis Crick, and Maurice Wilkins on the structure of DNA, which in turn made it possible for geneticists to crack the DNA code of all organisms.In his later years, he promoted nuclear disarmament, as well as orthomolecular medicine, megavitamin therapy, and dietary supplements, especially ascorbic acid (commonly known as Vitamin C). None of his ideas concerning the medical usefulness of large doses of vitamins have gained much acceptance in the mainstream scientific community. He was married to the American human rights activist Ava Helen Pauling.

Gerald_Brenan

Edward FitzGerald "Gerald" Brenan, CBE, MC (7 April 1894 – 19 January 1987) was a British writer and hispanist who spent much of his life in Spain.
Brenan is probably best known for The Spanish Labyrinth, a historical work on the background to the Spanish Civil War, and for a mainly autobiographical work South from Granada: Seven Years in an Andalusian Village. He was appointed CBE in the Diplomatic Service and Overseas List of 1982.

Mariano_Fortuny_(painter)

Marià Josep Maria Bernat Fortuny i Marsal (Catalan pronunciation: [məɾiˈa ʒuˈzɛb məˈɾi.ə βəɾˈnat fuɾˈtuɲ i məɾˈsal]; Spanish: Mariano José María Bernardo Fortuny y Marsal; June 11, 1838 – November 21, 1874), known more simply as Marià Fortuny or Mariano Fortuny, was the leading Spanish painter of his day, with an international reputation. His brief career encompassed works on a variety of subjects common in the art of the period, including the Romantic fascination with Orientalist themes, historicist genre painting, military painting of Spanish colonial expansion, as well as a prescient loosening of brush-stroke and color.

Jan_August_Hendrik_Leys

Henri Leys, Hendrik Leys or Jan August Hendrik, Baron Leys (18 February 1815 – 26 August 1869) was a Belgian painter and printmaker. He was a leading representative of the historical or Romantic school in Belgian art and became a pioneer of the Realist movement in Belgium. His history and genre paintings and portraits earned him a European-wide reputation and his style was influential on artists in and outside Belgium.

Leon_Lhermitte

Léon Augustin Lhermitte (French pronunciation: [leɔ̃ oɡystɛ̃ lɛʁmit]; 31 July 1844 – 28 July 1925) was a French naturalist painter and etcher whose primary subject matter was rural scenes depicting peasants at work.

Jean_Francois_Millet

Jean-François Millet (French pronunciation: [ʒɑ̃ fʁɑ̃swa milɛ]; 4 October 1814 – 20 January 1875) was a French artist and one of the founders of the Barbizon school in rural France. Millet is noted for his paintings of peasant farmers and can be categorized as part of the Realism art movement. Toward the end of his career, he became increasingly interested in painting pure landscapes. He is known best for his oil paintings but is also noted for his pastels, Conté crayon drawings, and etchings.