We see various things on earth that are of different colors. We see these colors due to the presence of photoreceptors, known as the cone in the retina of our eyes. The light that enters our atmosphere strikes each object present on earth and reflects back, more or less to our eyes. These lights have different wavelengths which determine what color we will see. moon
Our vision is not only limited to the objects on earth. We can also see heavenly bodies that are very far away from us in the space. Moon and Sun are such two heavenly bodies which can be seen from the earth. Both of these planets are visible to our eyes in different colors, where the moon appears to be white and the sun appears to be yellow. However, the color of moon and sun, which we see from the earth’s surface, is not the actual color of these planets.
The color of the sun-
The sun comprises of several gases such as hydrogen, helium and many more. Over its surface, continuous nuclear fusion reactions take place when hydrogen atoms are compressed to create helium. This process releases a large amount of energy in the space. This energy travels in the form of light and when it hits earth’s atmosphere, the wavelength of the light changes from a higher frequency to lower frequency. This makes the appearance of sunlight yellow. Our atmosphere contains many particles which make it act as a glass prism, thus when light travels through it we see the blue color sky and yellow color of the sun.
The color of moon-
The moon often appears to be in different colors throughout the year, but its actual color is grey. Unlike earth, where there are objects colored in different ways due to its atmosphere, water, and life; on the moon, there is no such atmosphere and life. Instead, the moon contains magnesium, calcium, iron, aluminum, oxygen, feldspar, silicon, and pyroxene. These all basic minerals collectively give grey color to the moon.
Moreover, we also find many dark spots over the moon from the earth. All those spots are the result of huge amount of volcanic activity and this activity has also formed various types of rocks over it. These volcanic activities gave Lunar Marias, which are the less reflective spots on its surface. This is the reason why we can see colorful diversity on the moon from earth.
Every color of the moon that we see from the earth is due to the material reflectivity of light. The color outside the earth’s atmosphere is provided by the sunlight and when it gets reflected from the surface of the moon to the earth, its color changes due to the earth’s atmosphere.