Explore the Universe: Your Guide to Astronomy

During the Christmas week, Jupiter and Saturn, two enormous planets in our solar system, will be closer to each other than they have been in the past 800 years. According to astronomers, their approach began in the early summer, and on December 21, we will have the opportunity to witness them in the night sky…

Astronomy became the first field of study to achieve a high level of understanding, capable of making accurate predictions about the movements of celestial bodies as early as the second half of the 1st millennium BC. The early success of astronomy, in comparison to other natural sciences like physics, chemistry, and biology, can be attributed…

Stars, which are among the most blazing entities in the cosmos, continue to intrigue scientists and researchers alike. Thanks to advancements in technology, humanity is constantly uncovering fresh insights into these celestial bodies, discovering their unique characteristics and distinguishing features. Understanding the phenomenon of star luminosity When observing the night sky without any optical aids,…

In our quest to find the answer to this inquiry, let’s commence with the celestial body we are most familiar with – our Sun! Owing to the Earth’s atmosphere, we perceive our Sun as a shade of yellow and occasionally red or even orange! Nevertheless, its actual hue is white or a shade close to…

The Solar System It is common knowledge that there are nine planets in the solar system, as we were taught in school. However, this belief changed in 2006 when scientists conducted a detailed study of Pluto and classified it as a dwarf planet due to the presence of various celestial bodies in its vicinity. Presently,…

Now, let’s shift our focus to the historical development of the theory of gravitation. Setting aside the inquiry into the essence of gravitation, it is worth mentioning that, from a “utilitarian” perspective (in order to compute the motions of celestial bodies), it was crucial to understand the relationship between the force of gravitational interaction and…

Stellar magnitude, also known as visible stellar magnitude, is a dimensionless numerical value used to describe the brightness of celestial objects, primarily stars, as seen from the observer’s location. It takes into account both the amount of light emitted by the object and its distance from the observer. Stellar magnitude serves as a metric for…

Saturn, the stunning sixth planet from the Sun, is truly a sight to behold in our Solar System. This gas giant, which is the farthest planet from its star, can be observed from Earth without the need for any special equipment. Consequently, humanity has been aware of its presence for a considerable length of time….

The solar system is home to a multitude of celestial bodies with varying sizes and shapes. Within this vast expanse, natural satellites hold a special place. Our very own Moon falls into this category as a satellite. Notably, the Moon stands out due to its impressive size. In fact, it is relatively large when compared…

Today, let’s explore the galaxy that includes our very own planet Earth. Additionally, we’ll discuss the vastness of cosmic distances and the entirety of the universe. Currently, it is not possible to view or distribute the video lesson to students In order to access this lesson and the rest of the video lessons included in…

Jupiter acquired its name from the Roman god of gods. This immense gas planet, which is recognized as the fifth planet in our solar system, has constantly piqued curiosity among celestial bodies. The Jupiter system itself is akin to a miniature solar system, complete with a multitude of satellites orbiting the planet. With a size…

Each celestial body possesses a core within its structure. Typically, this core is comprised of multiple layers, serving as a foundational element for the spherical body. The substances present within the core exhibit extraordinary properties. For instance, iron, found at significant depths in the central region of the planet, has the ability to crystallize or…

Newton’s law of universal gravitation provides a method for calculating one of the most important physical properties of a celestial object – its mass. This can be done in several ways: a) By measuring the gravitational force on the surface of the planet (gravimetric method), b) Using Kepler’s third law, c) Analyzing the observed perturbations…

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…

When gazing at the dark expanse of the night sky, numerous individuals have witnessed the descent of celestial bodies resembling stars. However, the distinguishable trail left behind is not a result of these “falling stars,” but rather from a different type of extraterrestrial object known as meteorites. On a daily basis, a substantial quantity of…

The Solar System Perhaps you have witnessed the spectacle of a shooting star blazing a fiery trail across the nighttime heavens? It gives the illusion that a star has been extinguished and plummeted to the ground. However, this phenomenon is not a star at all, but rather a meteorite. From a distance, it is easy…

Perhaps you’ve come across the saying: “When you gaze up at the heavens, you’re actually peering into the past. Many of the stars visible in the nighttime sky have long since faded away.” This deep philosophical notion serves as a way for individuals to come to terms with the reality that all things eventually come…

There are various types of galaxies, including elliptical, lenticular, irregular, and radio galaxies. However, when it comes to size, which galaxy takes the crown as the largest in the universe? What is the largest galaxy in the universe? The size range in space is incredibly vast. From weightless photons to colossal black holes that consume…

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,…

Are you aware of which star is the most radiant in the sky? Frankly speaking, this inquiry is quite fascinating. Because, to an observer on Earth, it appears as one celestial body, but in relation to the entire cosmos, it is an entirely different entity. The luminosity of stars is characterized by two stellar magnitudes:…