Instruct: Given a question, retrieve passages that can help answer the question.
Query: How does Mars get its red color?
The surface of the planet Mars appears reddish from a distance because of rusty dust suspended in the atmosphere.[1] From closeup, it looks more of a butterscotch,[1] and other common surface colors include golden, brown, tan, and greenish, depending on minerals.[1]
Red Planet is a nickname for the planet Mars, due to its surface color.
It may also refer to:
In his 2001 reassessment of "The Angry Red Planet", Glenn Erickson of DVD Talk criticizes the film's flat direction, dull script and overuse of stock footage. Erickson does faintly compliment the film for at least coloring scenes of Mars' surface with a red tinge, which in his opinion gives the sequences "a credibly alien look". In his 2014 movie guide, Leonard Maltin judges the film to be only average, awarding it 2 out of 4 stars. However, reviewer Bruce Eder of AllMovie is more positive in his appraisal of the film, commending in particular its overall style of direction:
Foghorn then finally figures out how to get rid of Red. He disguises himself (using the same costume that Red used in the opening scene) and delivers a fake telegram to Red saying that he must leave immediately to claim a large inheritance. Red is anxious to leave but Foghorn stalls him, saying that Red can't leave without a gift. Foghorn then gives Red an "electric" bowling ball with a clock attached to it (to tell Red when its time to bowl). The ball is really a time bomb, but Red does not realize it because he is in such a hurry. Red leaves as the bomb detonates, leaving Foghorn to finally getting his revenge on Red who returns and says to Foghorn: "With a friend like you, I'll never need an enemy."
Historically, an association between the color of blood and rust occurs in the association of the planet Mars, with the Roman god of war, since the planet is an orange-red, which reminded the ancients of blood. Although the color of the planet is due to iron compounds in combination with oxygen in the Martian soil, it is a common misconception that the iron in hemoglobin and its oxides gives blood its red color. The color is actually due to the porphyrin moiety of hemoglobin to which the iron is bound, not the iron itself, although the ligation and redox state of the iron can influence the pi to pi* or n to pi* electronic transitions of the porphyrin and hence its optical characteristics.
One reason the artist's primary colors work at all is due to the imperfect pigments being used have sloped absorption curves, and change color with concentration. A pigment which is pure red at high concentrations can behave more like magenta at low concentrations. This allows it to make purples that would otherwise be impossible. Likewise, a blue that is ultramarine at high concentrations appears cyan at low concentrations, allowing it to be used to mix green. Chromium red pigments can appear orange, and then yellow, as the concentration is reduced. It is even possible to mix very low concentrations of the blue mentioned and the chromium red to get a greenish color. This works much better with oil colors than it does with watercolors and dyes.
Grisanty was born under politically oppressive circumstances in the Dominican Republic. As a child, he spent hours in his grandparents' garden observing colors, textures and lighting. Grisanty wrote: "There, I learned how green is shaded by red. How, without direct light, yellows become brown. How purple unveils its reds and blues in a transparency. And black does not exist. I learned that small things can make a big context and vice versa. I learned that the character of man is as complex as Nature."
Rei's Soldier identity is Sailor Mars. She wears a sailor suit colored in red and purple, along with red high heels, and in the manga and live-action series has a small red jewel at the waist, though this vanishes upon upgrades. (Concept art shows this was supposed to appear as a necklace when not transformed but never does) She is given specific titles throughout the various series, including Soldier of War and Guardian of Flame and Passion. Her personality is no different from when she is a civilian, although certain powers are unavailable to her in that form.
The spacecraft they live in on the journey to Mars does the flyby, but the crew separates and goes into a lander. The Excursion module's ascent stage must rejoin the main spacecraft before it gets too far away. An advantage is that the resources needed for Earth return don't have to enter and leave Mars orbit, but the ascent stage has to perform space rendezvous in solar orbit and the time on Mars is constrained by the need to this. Mars cyclers orbit the Sun in such a way as to pass by Mars and the Earth on regular intervals, performing Mars flybys on regular intervals. The crews would live on the stations during the interplanetary voyages. The concept for Flyby Excursion Landing Module is that a lander and flyby would separate in solar orbit, the lander would accelerate to get to Mars first, then land on Mars meanwhile the other segment does a Mars flyby, then the lander takes off and rendezvous with the flyby segment transferring the crew over. (see also Mars Excursion Module (MEM))
Mars () is the ruling planet of Aries and is exalted in Capricorn. Mars is the Roman god of war and bloodshed, whose symbol is a spear and shield. Both the soil of Mars and the hemoglobin of human blood are rich in iron and because of this they share its distinct deep red color. He was second in importance only to Jupiter and Saturn, due to Mars being the most prominent of the military gods worshipped by the Roman legions. 
The color blood red is a dark shade of the color red meant to resemble the color of human blood (which is composed of oxygenated red erythrocytes, white leukocytes, and yellow blood plasma) by cinnabar, a quick silver thermometer analogue display. It is the iron in hemoglobin specifically that gives blood its red color. The actual color ranges from crimson to a dark brown-blood depending on how oxygenated the blood is, and may have a slightly orange hue. Deoxygenated blood, which circulates closer to the body's surface and which is therefore generally more likely to be seen than oxygenated blood, issues from bodily veins in a dark red state, but quickly oxygenates upon exposure to air, turning a brighter shade of red. This happens more quickly with smaller volumes of blood such as a pinprick and less quickly from cuts or punctures that cause greater blood flows such as a puncture in the basilic vein: all blood collected during a phlebotomy procedure is deoxygenated blood, and it does not usually have a chance to become oxygenated upon leaving the body. Arterial blood, which is already oxygenated, is also already a brighter shade of red— this is the blood see from a pulsating neck, arm, or leg wound, and it does not change color upon exposure to air. The color "blood red", therefore, covers both these states: the darker deoxygenated color and the brighter oxygenated one. Also, dried blood often has a darker, rust-colored quality: all dried blood has been oxygenated and then desiccated, causing the cells within it to die. This blood is often darker than either shade of red that can be seen in fresh blood. 
Through the course of living as Mars, Rapture takes up a life of her own and decides that she does not need him any more. Satan arranges, subtly, a demoness for his new companion, hoping to get Mars in his debt that way. In the end, this backfires and he ends up with two loves in his life.
Calder Hansen's flag uses two solid colors and a chevron to represent multiple aspects of Mars itself and of humanity’s relationship with Mars. The red chevron on the flag represents the color of Martian soil and the bravery of humanity in traveling to Mars. The white background of the flag represents the ice caps of Mars and humanity's peace intentions for colonization. The chevron represents the mountains of Mars (especially Olympus Mons) and an upward-pointing arrow symbolizing humanity’s journey into space.
Spirit
One of its instruments the Mössbauer spectrometer (MIMOS II) was designed to look at the iron bearing minerals on mars. It is responsible for determining the presence of many specific iron oxides, which give the planet a red color.
The design of the flag was originally conceived by NASA planetary scientist Pascal Lee during the 1998 Haughton-Mars Project arctic expedition to Devon Island, Canada. In addition to symbolizing liberty as a tricolour flag, the design evokes a vision of the "future history" of Mars in which the planet is transformed from red, to green, and then blue like the Earth. The red bar, which lies closest to the mast, symbolizes Mars as it is today. The green and blue symbolize stages in the possible terraforming of Mars, should humanity ever have the ability and will to undertake such a task; the ethics of terraforming remaining a matter of debate. Kim Stanley Robinson's popular science-fiction trilogy "Red Mars", "Green Mars", and "Blue Mars" also provided inspiration for the flag. Beyond any human-induced terraforming, the color sequence also depicts the environmental change Mars might experience on astronomical timescales as the Sun evolves into a red giant and Mars becomes warmer. In the Pantone Color Matching System (PCMS), the red is the "Red Clay" (18-1454), the green is the "Mint Green" (17-6333), and the blue is the "Imperial Blue" (19-4245).
The apparent colour of the Martian surface enabled humans to distinguish it from other planets early in human history and motivated them to weave fables of war in association with Mars. One of its earliest recorded names, Har decher, literally meant "Red One" in Egyptian.[2] Its color may have also contributed to a malignant association in Indian astrology, as it was given the names Angaraka and Lohitanga, both reflecting the distinctively red color of Mars as seen by the naked eye.[2] Modern robotic explorers have shown that not only the surfaces, but also the skies above may appear red under sunlit conditions on Mars.
Red is the color at the end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometres. It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy. The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide. Iron oxide also gives the red color to the planet Mars. The red colour of blood comes from protein hemoglobin, while ripe strawberries, red apples and reddish autumn leaves are colored by anthocyanins.
Munsell Hue is the attribute of color by which we distinguish red from green, blue from yellow, and other colors. Munsell chose several colors to be the principal hues. These are Red, Yellow, Green, Blue, and Purple. These hues were arranged in a circle. Each hue can be mixed with the same amount of the neighboring hues to create intermediate hues: yellow-red, green-yellow, blue-green, purple-blue, and red-purple. Each color can be defined by how much of each principal hue it contains. A color that is composed of just a principal hue would be given a number 5. So, the red primary would be given the number 5R. If you move to the left of the red hue, the number increases, with the color exactly in between red and yellow-red defined as 10R. Continuing around the circle, the number of the color goes back down to 1YR right after 10 red, until the color is composed of just the yellow-red primary, in which case the color would be 10YR. So, the number represents how much of the primary hue the color contains.
In a press release on the removal of the food dyes, the company wrote that "replacing artificial colors across all our products is a complex task. We expect it will take about five years to develop the full range of alternatives that guarantee the integrity and great taste of the products you know and love, and to go through the process of obtaining regulatory approval for all new ingredients in development." Mars has frequently used dyes and artificial colors in many of its products over the years. Due to public outcry calling for change, and a petition that gained more than 217,000 signatures that was created by Change.org, the company wanted to bring about a significant change to the way it was viewed by consumers. There have been two different arguments presented about the use of artificial colors in foods. Many studies have shown that their use in food could be linked to illnesses such as ADHD and cancer. There has seemed to be an issue with the use of red 40, yellow 3, yellow 5 and yellow 6 and how they bind to the DNA in humans. Other additives such as Blue 2 have been linked to the cause of brain tumors in rodents and in 1981, Green 3 was found to be a direct link to bladder cancer. Given the fact that the company will be replacing the artificial dyes in its products, the company has also said that consumers should prepare themselves for the transition process in terms of special packaging and colors being used as to indicate that the changes have taken place. It has been said that the company is not likely to stop using coloring entirely, but that the use of artificial coloring will be going away.
Instead Mars will use natural colors like turmeric in India.
The UV representation of chrominance was chosen over straight R and B signals because U and V are color difference signals. In other words, the U and V signals tell the television to shift the color of a certain pixel without altering its brightness. Or the U and V signals tell the monitor to make one color brighter at the cost of the other and by how much it should be shifted. The higher (or the lower when negative) the U and V values are, the more saturated (colorful) the pixel gets. The closer the U and V values get to zero, the lesser it shifts the color meaning that the red, green and blue lights will be more equally bright, producing a greyer pixel. This is the benefit of using color difference signals, i.e. instead of telling how much red there is to a color, it tells by how much it is more red than green or blue. 
In turn this meant that when the U and V signals would be zero or absent, it would just display a greyscale image. If R and B were to have been used, these would have non-zero values even in a B&W scene, requiring all three data-carrying signals. This was important in the early days of color television, because old black and white TV signals had no U and V signals present, meaning the color TV would just display it as B&W TV out of the box. In addition, black and white receivers could take the Y′ signal and ignore the U- and V-color signals, making Y′UV backward-compatible with all existing black-and-white equipment, input and output. If the color-TV standard wouldn't have used color difference signals, it could mean a color TV would make funny colors out of a B&W broadcast or it would need additional circuitry to translate the B&W signal to color.
It was necessary to assign a narrower bandwidth to the chrominance channel because there was no additional bandwidth available. If some of the luminance information arrived via the chrominance channel (as it would have if RB signals were used instead of differential UV signals), B&W resolution would have been compromised.
In order to determine the clarity of a diamond, it is examined under a loupe, which is magnification device that enlarges the visual field 10X. Diamonds are inspected to determine whether there are inclusions on its outside or on the inside. Red diamond clarity is measured like all diamonds on the scale from Flawless to Included. Most red diamonds fall within the range of VS1 – SI2 due to the nature of how they were formed. However, the largest and most famous red diamond, the Moussaieff Red, was graded with an Internally Flawless clarity.
A red diamond’s clarity has little effect on its value because of the rarity of the color. A red diamond buyer will be far more interested in the purity of the red and the carat size in order to decide on its desirability. This is not true for all diamond colors, but it is especially so for the colors that are highest in demand, namely red, pink and blue. For the less expensive colors, such as yellow and brown, clarity will be more of a factor.
The novel series by Kim Stanley Robinson known as the "Mars trilogy" chronicles the colonization and terraforming of Mars. The novels are titled according to the dominant color in the stage of terraforming achieved in each volume: "Red Mars" (1992), when Mars is still in its natural state; "Green Mars" (1993), when plants are able to grow in the atmosphere; and "Blue Mars" (1996), when the atmospheric pressure and temperature have risen high enough for seas and rivers to form.
While red is the color most associated with love, it also the color most frequently associated with hatred, anger, aggression and war. People who are angry are said to "." Red is the color most commonly associated with passion and heat. In ancient Rome, red was the color of Mars, the god of war—the planet Mars was named for him because of its red color.
The only changes for the 2018 model year were colors. The bronze color is gone and in its place is a metallic red color, "Mars red metallic," with a dark slate metallic nose. Otherwise BMW continued with the 2017 changes.
The only changes for the 2018 model year were colors. The bronze color is gone and in its place is a metallic red color, "Mars red metallic," with a dark slate metallic nose.