Get Instant Loan Check eligibility in just 5 mins Up to ₹50 lakhs | Starts at 9.99% Sun is white when seen from space. Earth's atmosphere makes Sun appear yellow. Rayleigh scattering causes Sun's perceived colors. Webinar by Vishal Malkan Find the weak links in your portfolio by Vishal Malkan Look at a child’s drawing of the Sun and it will most likely be yellow. From school textbooks to weather illustrations, the Sun is commonly represented in shades of yellow, orange or gold. But the star at the centre of our solar system is actually white when viewed from space. The reason behind this difference lies in the interaction between sunlight and Earth’s atmosphere. Concepts such as the sunlight spectrum, Rayleigh scattering and atmospheric filtering help explain why the Sun can appear white, yellow, orange or red depending on where and when we observe it. Understanding the true colour of the Sun reveals how atmospheric science influences what we see in the sky every day. What is the actual colour of the Sun? The Sun is often described as a yellow star, but it emits light across the visible spectrum, including red, orange, yellow, green, blue and violet wavelengths. When these colours reach our eyes together, they appear as white light. This is why the Sun looks white when observed from space, where there is no Earth-like atmosphere to scatter its light before it reaches an observer. The principle can be demonstrated using a glass prism. When white sunlight passes through a prism, it separates into the colours of the rainbow, showing that white light contains multiple visible wavelengths. NASA explains that the Sun’s photosphere has a temperature of approximately 5,500°C and emits a broad range of electromagnetic radiation. The combined visible wavelengths produce the white appearance of sunlight. Why does the Sun look yellow from Earth? The yellowish appearance of the Sun is largely connected to Earth’s atmosphere. As sunlight travels through the atmosphere, it encounters molecules such as nitrogen and oxygen. These molecules scatter shorter wavelengths of light, particularly blue and violet, more effectively than longer wavelengths. This process is known as Rayleigh scattering. Because some of the blue light is scattered away from the direct path between the Sun and our eyes, the sunlight reaching us can appear warmer, with yellow, orange and red tones becoming more noticeable. The Sun is not physically changing colour. Instead, the atmosphere alters how its light is distributed before it reaches an observer on the ground. The amount of scattering also depends on the Sun’s position in the sky and the distance sunlight travels through the atmosphere. What is Rayleigh scattering? Rayleigh scattering occurs when light interacts with particles or molecules that are much smaller than the wavelength of the light. Shorter blue wavelengths scatter more strongly than longer red wavelengths. This explains why blue light spreads across the atmosphere and why the sky generally appears blue during the day. The same phenomenon contributes to the changing appearance of the Sun. When the Sun is high in the sky, sunlight travels through a relatively shorter atmospheric path. When it is close to the horizon, the light passes through a greater amount of atmosphere, increasing the scattering of shorter wavelengths. Why is the Sky blue? The blue sky and the yellowish appearance of the Sun are connected to the same physical process. Sunlight contains multiple visible colours. As it enters Earth’s atmosphere, blue light is scattered in different directions by air molecules. When we look at the sky away from the direct position of the Sun, much of the light reaching our eyes is scattered blue light. This gives the daytime sky its familiar blue appearance. Without an atmosphere, there would be no comparable scattering effect. The sky would appear dark, while direct sunlight would look white. Why does the Sun turn orange or red at sunrise and sunset? The Sun often appears orange or red during sunrise and sunset because sunlight travels through a longer stretch of Earth’s atmosphere at these times. When the Sun is near the horizon, its light passes through more atmospheric material before reaching an observer. Much of the shorter blue light is scattered away, allowing longer red and orange wavelengths to become more prominent in the direct sunlight. This creates the warm colours associated with dawn and dusk. Dust, smoke, pollution and other particles in the atmosphere can influence the intensity and appearance of these colours. Depending on local conditions, sunsets may appear pale orange, deep red or even pink. Does pollution affect the Sun's colour? Atmospheric particles, including dust and pollution, can influence how sunlight is scattered and absorbed. While Rayleigh scattering by air molecules explains the basic blue-sky effect, larger particles and aerosols can also affect visibility and the colours observed during sunrise and sunset. The presence and concentration of these particles may make sunsets appear more vivid or hazy. However, the exact appearance depends on several factors, including atmospheric conditions, humidity and the position of the Sun. What would the Sun look like without Earth's atmosphere? From space, the Sun appears white because its visible wavelengths reach an observer without passing through Earth’s atmosphere. The sky around it would appear black rather than blue because there would be no atmosphere to scatter sunlight across the sky. This difference highlights an important principle in astronomy and atmospheric science: the appearance of an object can depend on the environment through which its light travels. The Sun itself remains the same, but the view from Earth is influenced by the atmosphere surrounding our planet. The science behind the Sun's changing appearance

The Sun’s colour is a simple example of how light and atmospheric conditions shape human perception. Its visible light contains the colours of the rainbow, which combine to produce white light. Earth’s atmosphere scatters shorter wavelengths more strongly, contributing to the Sun’s yellowish appearance during the day and its orange or red tones near the horizon. The next time you see a blue sky or a vivid sunset, remember that both are connected to the way sunlight interacts with the atmosphere. What appears to be a yellow Sun is, in reality, the result of sunlight passing through the air around our planet. Discover the latest Business News , Sensex , and Nifty updates. Obtain Personal Finance insights, tax queries, and expert opinions on Moneycontrol or download the Moneycontrol App to stay updated! Nifty set for Positive Start | Oil prices, US yields cool off | Opening Bell Watch more UNGA 2026: World Leaders Attend 'Partners For Multilateralism Summit' In New York Watch more Trump-Mamdani NYC Meeting; President Defends Media Restrictions, Housing Plans In Focus Watch more Auto Ancillaries To New-Age Consumption: Where Trideep Bhattacharya Sees Value Watch more Trump-Xi Summit: U.S. And China Hold Key Trade Talks As Truce Ends November 10 Watch more Subscribe to Tech Newsletters Al Edge Newsletter On Saturdays Find the best of Al News in one place, specially curated for you every weekend. Find the best of Al News in one place, specially curated for you every weekend. MC Tech 3 Newsletter Daily-Weekdays Stay on top of the latest tech trends and biggest startup news. Stay on top of the latest tech trends and biggest startup news. Email address * 'Rs 48,300 per person, worth it?': Couple spends Rs 96,600 on month-long Ladakh workcation Bengaluru techie earning Rs 35 LPA wants 6-month break: ‘I’ve been feeling burned out' Indian man who started with pizza delivery now owns 3 restaurants in Australia 'Zaheer Khan is the Sachin Tendulkar of bowling': Fans dig MS Dhoni's 2012 remark after pacer's CSK appointment Shah Rukh Khan, wife Gauri and daughter Suhana Khan visit Lalbaugcha Raja, watch video Sidharth Malhotra's The Vvaan copyright row: Balaji Telefilms, TVF to give due credit to musician Sargam Vaish for Aigiri Nandini tune Who is Dinesh Thakkar? 12th-pass Angel One founder behind Rs 711 crore luxury tower deal in Mumbai For 13 years, this 55-year-old teacher in Maharashtra has walked 5 km through a forest every day to teach one student Tata Sierra Dark Edition based on new Legend series: Up to Triple-screen setup, powered seat and wireless Android Auto and more Xiaomi 18 Pro series to launch on September 23 with hardware-level privacy display Sri Lanka vs Malaysia: Which is better for your holiday? 7 things to consider before booking your trip Quote of the day by Ajit Doval: “Know where you are. Know where you want to go and…" Lived in a ₹3,000 rented home in Mumbai slum: Labourer’s son cracks JEE Advanced after studying on neighbour’s Wi-Fi Quote of the day by Robert Louis Stevenson: "That man is a success who has lived well, laughed often and loved..." - Meaning of the famous quote, life lessons and a different definition of success Advisory Alert: You got 30 Day’s Trial of Ad-Free Experience Top Articles from Financial Times Actionable Insights Economic Calendar You are already a Moneycontrol Pro user.