In Table 1, you can find the concentration of dry gases along with water vapor, aerosols, radioactive substances, and ions, which are essential components of the lower layers of the atmosphere. These layers play a crucial role in sustaining human life. Table 1. Breakdown of dry air near the Earth’s surface, % The composition of…

Conducting scientific experiments inside a black hole is the only way to fully understand what it is and what happens inside. However, this is a very difficult task. The closest object with black hole characteristics, known as V4641, is located 1600 light years away from Earth. A light year is equal to 9,460,000 million kilometers….

An astronomical unit (au or AU) serves as a unit of measurement that approximates the distance between the Earth and the Sun. This distance is roughly equal to 150 million kilometers (93 million miles) or about 8.31 light minutes. The actual value of the astronomical unit varies throughout the year as the Earth orbits around…

The mass of our planet Earth has been a subject of study and exploration by scientists throughout history. One of the most intriguing aspects of our planet is its mass, which cannot be directly measured. Instead, scientists have developed various methods of indirect measurement. Therefore, in this article, we will provide you with comprehensive information…

The pioneering satellite, a marvel of engineering, design, and scientific ingenuity, was the brainchild of a collective of Soviet Union’s brightest minds. Its designation, befittingly, was “Sputnik-1”. Although its payload was modest and its time in orbit brief, spanning a mere three months, it etched its name in history, forever illuminating the mysteries of the…

On October 4, 1957, the Soviet Union achieved a groundbreaking milestone by successfully launching the world’s first artificial satellite. This historic event marked the beginning of human exploration of outer space. In honor of the 60th anniversary of this significant achievement, the team at TASS-DOSSE has prepared a detailed article highlighting the history of the…

The Devonian mass extinction was a devastating event that occurred 65 million years ago, before the first animals were able to transition from the sea to land. During this time, numerous sea creatures faced extinction, leading to a significant loss of biodiversity in the ocean ecosystem. What was the Devonian period like? The Devonian period,…

1) The structure and composition of the Earth’s atmosphere. 2) Geopotential and barometric altitude. The Earth’s atmosphere is a gaseous shell with solid and liquid particles in constant motion relative to the Earth’s surface. About half of the total mass of the atmosphere is located in its lower boundary. The lower boundary of the atmosphere,…

Having a good understanding of the major constellations and stars is essential for navigating the celestial sphere. This fact is well-known to all. Equally well-known is the significance of the Big Dipper, also known as Ursa Major, in the night sky of Russia and its neighboring countries. This particular constellation holds great importance not because…

Despite its close proximity to Earth, the moon has a completely distinct appearance from our planet. Its surface is markedly dissimilar to that of Earth. What is the composition and surface of the Moon? The Moon is similar in structure to Earth and is composed of several layers: An inner core made up of molten…

In ancient times, scientists began to realize that it is not the Sun that revolves around our planet, but rather the opposite is true. This groundbreaking idea was solidified by Nicolaus Copernicus. The Polish astronomer developed his heliocentric system, which convincingly proved that the Earth is not the center of the Universe. According to Copernicus,…

The phenomenon of space is undeniably captivating. The mere notion of the possibility of extraterrestrial life stimulates our curiosity. It allows us to gaze into the infinite expanse and comprehend the immense and uncharted nature of our world. However, space not only captivates our imagination, but it also attracts galaxies. There is a force in…

The Hubble Deep Field extreme (XDF) project was finalized in September 2012 and presents a collection of the farthest galaxies ever captured in a photograph. With the exclusion of a small number of stars located in the foreground (which are distinguishable due to their bright appearance and diffraction peaks), each individual entity depicted in the…

It will only take you approximately 30 minutes to go through this content. However, for our planet, this duration represents billions of years. The origin of Earth Let’s go back to the very beginning: 5 billion years ago. However, where is the magnificent blue planet? All we can observe is the recently formed Sun, surrounded…

Dolphin constellation is actually one of the smallest constellations in the northern hemisphere. It occupies only 189 square degrees, making it the 69th largest constellation. Its shape resembles that of a kite and it is surrounded by the neighboring constellations Fox, Little Horse, Aquarius, Eagle, Arrow, and Pegasus. Legend of the Dolphin Constellation As an…

A celestial coordinate system is utilized to determine the precise location of a celestial body. These systems, known as the ecliptic coordinate system or equatorial coordinate system, are constructed based on specific circles of the celestial sphere. In contrast, the geographic coordinate system is employed to determine coordinates on the Earth’s surface. Let’s explore each…

Not only professional astronomers, but also amateurs are always drawn to the starry sky to observe celestial bodies. If you simply raise your head and gaze at the sky on a clear night, you will instantly find yourself in a world that is both enigmatic and mysterious. The first thing that captures your attention are…

Polaris, also known as the North Star, is widely recognized as one of the most prominent stars in the night sky. What do astronomers currently understand about this celestial object? We have compiled a list of ten intriguing facts about Polaris, encompassing both well-known information for amateur astronomers and potentially groundbreaking discoveries. However, unlike the…

The way in which all the planets in the solar system are affected by the gravitational force of the Sun is similar to the way the Moon and the Earth’s man-made satellites revolve around the Earth. This type of motion is referred to as central motion. Kepler’s laws govern this type of motion. Kepler’s first…

is a type of telescope that uses a combination of lenses to reduce chromatic aberration. This telescope is a refractor with a light diameter of 60 mm and a focal length of 700 mm. Telescope Refractor. Aperture – 60 mm. Focal length – 700 mm. Refractor telescope Refractor telescope – A type of optical telescope…