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Gone are the days when people believed the earth was flat and supported by elephants. In ancient times, many scientists and astronomers argued that the earth is spherical and revolves around its axis. Nowadays, this is common knowledge from childhood. But why is our planet still round? To answer this question, we need to take…

In the contemporary expression of the law of universal gravitation, there exists a factor, known as the constant of gravity, that distinguishes itself by appearing before the formula. It is fascinating to note that Newton, the individual who first discovered the law of attraction, did not utilize the explicit value of the constant, as its…

As we all know, a segment of the celestial sphere has been identified as a zodiac group. One of the constellations that falls within this group is Virgo, which can be found on the ecliptic. Spanning 1294 square degrees, it is the second largest constellation in the entire expanse of the sky. Furthermore, it currently…

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…

The Big Dipper constellation is one of the largest constellations in terms of area, ranking third after Hydra and Virgo. This part of the sky contains over 200 stars, and on a clear night far from city lights, up to 125 of them can be seen with the naked eye. The stars within the Big…

Regrettably, your browser does not support JavaScript or it is disabled. You have the option to either download the clip or obtain a player to play the clip directly in your browser. Solar eclipse – An astronomical event in which the Moon obscures (eclipses) all or a portion of the Sun as seen from an…

Spotting the Cancer constellation in the night sky can be a challenging task since it consists of only a handful of dim stars. However, there is no reason to disregard this particular constellation: it contains unique celestial entities that pique curiosity. For instance, are you interested in discovering the distance one must traverse to reach…

"If you enter a black hole, the energy of your mass will come back to our world, but in a distorted form," as famously stated by the renowned British physicist, Stephen Hawking. The Milky Way galaxy is home to an immense number of stars, including our very own Sun, as well as interstellar gas that…

It is common knowledge that our galaxy is named the Milky Way. Specifically, initially, its visible components in the nocturnal firmament were referred to by this moniker – those spiral arms of the galactic structure that are observable from our planet. However, what is the connection between our galaxy and milk, and what is its…

The Size of the Earth – a guide for kids: the Earth’s shape and measurements, comparing it to other celestial bodies like Jupiter, the Sun, Sirius, and stars, its radius, and notable features like Mount Everest and the Mariana Trench. To us, the Earth may seem incredibly vast. Many children surely dream of traveling around…

The starry sky can be seen as a rather disorganized scene, requiring a vivid imagination to perceive the shapes of people, animals, and objects that the ancient people saw in the randomly scattered stars. However, there are certain mesmerizing star formations that capture our attention! One such drawing is the renowned Big Dipper, which serves…

Astronomy is a scientific field that, like any other, has its own unique vocabulary or jargon. To those unfamiliar with the subject, this jargon may seem like a meaningless collection of phrases, sometimes even eliciting a smile. For instance, we have terms such as “star’s brilliance,” “star’s luminosity,” and “star’s brightness.” At first glance, it…

Throughout history, humanity has gazed up at the heavens and yearned to take flight. As civilization advanced, the dream of exploring beyond our planet became a reality. There may not be a plethora of professions associated with space, but those that do exist are crucial and invaluable, enabling us to gain a deeper understanding of…

Elongation (from the Late Latin word elongatio, meaning “moving away”) is a term used in astronomy that has multiple definitions. Related concepts The pole of the ecliptic refers to a point on the celestial sphere that intersects with the perpendicular to the ecliptic plane. It serves as the pole for the ecliptic system of celestial…

The Milky Way is a galaxy that contains a vast collection of stars, planets, and other celestial objects. It is one of billions of galaxies in the universe. The Milky Way is home to our solar system, which includes the Earth and other planets. It gets its name from the hazy band of light that…

Let’s begin by defining the concept of a radius and its purpose. It’s a rather straightforward concept. The radius is the line segment that connects the center of the circle with any point on its circumference. In other words, it is the length of this segment. Additionally, it is equivalent to half the diameter. Consequently,…

Earth’s temperature – a description for kids: distribution, surface indicator, air and core temperature of the third planet from the Sun, as well as the highest and lowest temperatures. We are always curious about the temperature of our home, the Earth, which is the third planet in our solar system. It’s important for children to…

One light-year (sv. yr., ly) corresponds to the distance that light travels in the span of one year. More precisely, it represents the distance a photon can travel through a vacuum without any gravitational interference, within a single tropical year during the epoch 1900.0 (equivalent to 31,556,925.9747 SI seconds; also referred to as Ephemeris Time)….

The origin of the universe is believed to be explained by the Big Bang theory. This concept emerged from the observation that galaxies are rapidly moving away from each other in every direction, suggesting that they were propelled by a powerful primordial explosion. The Definition of the Big Bang The Big Bang theory is the…

Protuberances (known as Protuberanzen in German, derived from the Latin word protubero meaning “blowing up”) are compact accumulations of cold substances that rise and remain suspended above the Sun’s surface due to the presence of its magnetic field. The exploration of protuberances began with the occurrence of the Solar eclipse on July 8, 1842, when…