On earth there are special places that due to their characteristics make them the darkest places in the world, but not because they are bad, but because they don’t have light pollution and allows you to see the stars without any special equipment. These places are paradises for astronomers because they can see stars and constellations to their full splendor, let me tell you about some of these places in the world:
The Atacama Desert, in the North of Chile, one of the most arid, high and isolated regions of the world while its sky is one of the most crystalline and dark of the planet. It is considered one of the best place on the planet to observe the stars due to its dry climate, low cloudiness and distant light and radioactive contamination. In this area 40% of the astronomical observation of the world is found.
In this place they find some of the largest telescopes such as Atacama Large Millimeter Array (ALMA), which has 66 giant individual antennas and the Extremely Large Telescope (ELT) will be built, which will be the largest telescope in the world.
This region is sunny most of time and on the night a spectacular starry sky usually appears. Near the small town of Portimão, on the south coast of the Algarve, the Astronomical Observatory Center of the Algarve, has several powerful telescopes to observe the sky making Algarve one of the most spectacular places for stargazing in Europe.
At an altitude of 1,800 meters, the giant dome of the Southern African Large Telescope (SALT) rises to the crystalline sky only three hours from Cabo where you can see the crystal clear sky and wonder. You can visit the 11 meters mirror and observe the stars but the observatory is only open for scientists.
The clarity with which the stars are seen is impressive. In Flafstaff, there is the Lowell Observatory, which was established in 1894 by Percival Lowell, a Harvard graduate with a degree in mathematics. Between 1928 and 1929 a telescope was built with the purpose of completing Lowell's research on Planet X, which would represent the ninth planet in our solar system. On February 18, 1930, Clyde Tombaugh made the first recognized sighting of the object later named Pluto.
Big Bend National Park is located in the south of the state of Texas, United States. It has an area of about 100 km, with a maximum width of 90 km and it has more than 95% of desert or semi-arid surface. In the central part rises a mountainous massif of uneven relief and formed by naked rocks. The name Big Bend refers to the U-shaped curve that the Rio Grande makes in southwest Texas. This park is considered having the least light pollution of any other national park where you can see approximately 2,000 stars with the naked eye on a nighttime visit.
The Chaco Canyon National Park is a historic park in the United States and a World Heritage declared by UNESCO that houses a number of towns in the southeastern United States. The park is made up of a relatively inaccessible valley cut by the "Chaco Wash" and contains the largest number of ancient ruins in northern Mexico. Chaco has always been considered one of the best places in US to watch the stars. The authorities of Chaco try to protect the dark night skies for the enjoyment of star-gazing visitors as well as for the Nocturnal wildlife that relies on darkness for survival. This park is 99% safe to "natural darkness zone", in which there is no permanent outdoor lighting exists.
For the commitment to reduce the light pollution, The Chaco Canyon National Park receive the International Dark-Sky Association (IDA) becoming the fourth National Park System to earn this distinction, making this place one of the best places in the US to experience and enjoy natural darkness.
Thanks to 
• Sunday - Light
• Monday - Darkness
• Tuesday - Animal Kingdom
• Wednesday - Structures
• Thursday - Forces in Nature
• Friday - LoveBeauty Freedom
• Saturday - Agriculture
