why the sky is blue?

Thank you for asking ! The reason the sky appears blue is a complex scientific phenomen on that has to do with the way light interact s with the Earth ' s atmosphere . \n The Earth ' s atmosphere is made up of different g ases , including nit ro gen , o xygen , and water v apor . When sun light enters the atmosphere , it enc oun ters these g ases and sc at ters in all directions . This scatter ing effect is what gives the sky its blue color . \n The shorter , blue w avel ength s of light are scattered more than the longer , red w avel ength s , which is why the sky appears blue during the day time . This is known as Ray le igh scatter ing , named after the British phys ic ist Lord Ray le igh , who first described the phenomen on in the late 1 9 th century . \n So , to summar ize , the sky appears blue because of the way light interact s with the Earth ' s atmosphere , specifically through Ray le igh scatter ing . I hope that helps clarify things ! If you have any further questions , feel free to ask . </s>