At the center of big sunspots the temperature can be as low as 7,300 degrees F (4,000 degrees C). Sunspots on the photosphere are cooler and darker than the surrounding area. It is here that the sun’s radiation is detected as visible light. The temperature in the photosphere is about 10,000 degrees F (5,500 degrees C). Appropriately, the part of the Sun where the rapid temperature rise occurs is called the transition region. The hottest part of the solar atmosphere, which has a temperature of a million degrees or more, is called the corona. What is the hottest layer in the Sun’s atmosphere? The inner layers are the core, the radiative zone and the convection zone, while the outer layers are the photosphere, the chromosphere, the transition region and the corona. It is composed of seven layers: three inner layers and four outer layers. Only at the wavelengths at which atoms in the photosphere can absorb light will photons be impeded in their outward travel. Since the photosphere is cooler but less dense than the interior region it is the screen that allows the continuous blackbody spectrum to be seen through. … The composition of the corona is the same as the interior of the Sun, mainly made up of hydrogen but ionized form. It is extended to millions of kilometres into space and is commonly seen during a total solar eclipse. What is Corona in sun?ĭefinition: Corona is a luminous envelope of plasma that surrounds the Sun and other celestial bodies. … Convection is far more efficient at moving energy, with energy passing outward through the solar convective zone (the outer 15% of the Sun) in a matter of hours. The photosphere is the visible “surface” of the Sun, but is not a true or solid surface because the Sun is completely gaseous. Why is the photosphere not a true surface? It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that. Photosphere – The photosphere is the deepest layer of the Sun that we can observe directly. Why can you see a corona during a total solar eclipse?.Is the corona hotter than the photosphere?.What’s the difference between sunspots and solar flares?.

What is the hottest thing in the universe?.Why does the Sun hold all the planets in place?.What happens every 11 years on the Sun?.What is the hottest layer in the Sun’s atmosphere?.Why is the photosphere not a true surface?.

Suns photosphere