Solar radiation is the energy emitted by the sun in the form of radiation – electromagnetic waves. This energy is emitted by the photosphere, the outermost layer of the sun, which is approximately 300 km long. It is a source of energy for the planet, and is responsible for heating it up. It is alsoContinue reading “What is Solar Radiation”
Category Archives: Sun
The Yellow Sun Paradox
Who as a child didn’t draw pictures showing the sun – as a round ball with a smiling face, surrounded by a wreath of light rays? What color was the sun in your pictures? If the answer is “yellow”, you’re like me – my suns were always yellow, too. Why is that? Is the sunContinue reading “The Yellow Sun Paradox”
What If We Shot a Nuclear Bomb Into the Sun?
The sun itself is a huge nuclear mechanism. It releases every day an amount of energy equal to that of millions of atomic bombs. A nuclear bomb will not leave the slightest trace on the sun and will not alter its activity. Moreover, since the solar atmosphere has a temperature of thousands of degrees, theContinue reading “What If We Shot a Nuclear Bomb Into the Sun?”
How Was the Sun Formed?
The sun is the center of our solar system, and it is a huge nuclear reactor: inside, the fusion of hydrogen and helium generates energy at temperatures of around 15 million degrees. Temperatures of around 5700 degrees Celsius still prevail on its surface. From this surface, the photosphere, light and heat are radiated into space.Continue reading “How Was the Sun Formed?”
How does a solar eclipse occur?
When the sun darkens in the middle of the day it feels like the end of the world has arrived. During solar eclipses, the moon moves between the earth and the sun and partially or totally obscures it. It is probably the most dramatic spectacle that the sky has to offer us: the sunlight becomesContinue reading “How does a solar eclipse occur?”