Why Stars Can�t Be Seen During the Day

Ever wonder where the stars go during the day? What causes them to disappear when the sun comes out? Well, the answer is no magical mystery. The stars actually do not go anywhere during the day. They always remain in the same spot. The sun is visible to us because it is the star closest to the Earth. It appears to rise and set, but in actuality it�s the rotation of the Earth around the sun. When our part of the Earth is facing the sun during the day, the blue light that radiates from the sun scatters through the atmosphere and is what causes our sky to be blue. This light is so bright that it blocks us from seeing anything else in the sky. Due to this, it is only during the night when we are not facing the sun that the rest of the stars in the sky get to be visible and shine. When the darkness in the sky increases, the number of stars visible and their brightness also increase. Furthermore, the rest of the stars in our galaxy have a relatively weak brightness compared to that of the sun. Therefore, our eyes are not capable of seeing them in the sky. This is the same thing as having a flashlight pointed at you during the dark night versus in pure daylight. The light will not affect you much during the day. However, it will make your eyes burn if pointed at you at night. If there had been no atmosphere, the stars would be visible in daylight.

Moreover, although the stars are a lot more visible at night, those who live in urban and polluted cities such as New York City or Los Angeles will have a hard time seeing many stars at night. This is due to the fact that the city lights affect your eyes in a way that desensitizes them to be able to see the dimmer stars in the sky. You might only be able to see the big dipper and a few other stars. However, if you go somewhere rural and dark, it is amazing how many stars will be visible to you in the sky. Furthermore, air pollution, the amount of H2O, CO2 and other green house gases in the atmosphere can also affect one�s chances of observing the stars in a city. As mentioned before, the main factor that blockades people from seeing many stars in the sky in populated, urban cities is called light pollution, which occurs when light from all of the houses and streets gather together and cover the sky like an invisible drape that allows us to only see the brightest stars.

Name Date of Peak Moon
Quadrantids January 3 (night) New
Lyrids April 21 (night) Rises after midnight
Eta Aquarids May 5 (night) Sets in early evening
Perseids August 13 (night) Full
Draconids October 8 (night) Nearly full
Orionids October 21 (night) Rises after midnight
Leonids November 17 (night) Rises around midnight
Geminids December 13 (night) Just pass full

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