What is Flagella? Amazing facts and functions

Imagine a microscopic world where cells zip around like tiny boats, powered by whip-like structures that act as both engines and rudders. These structures are called flagella, and they’re far more than just simple tails. Found in bacteria, algae, sperm cells, and more, flagella are marvels of natural engineering—tools for movement, sensors of the environment, […]

Muscles: introduction and main principles

Muscles or the muscular system is one of the most amazing mechanisms created by nature. From the simplest organisms to humans, from the tiniest movements of cilia to the powerful jumps of a kangaroo—muscles are at work everywhere. They are the universal engine of living nature, without which life on Earth would be unimaginable. Key […]

What is a Cell? Structure, function and diagrams

The cell is the basic unit of all living organisms. It is a complex system in which each part performs specific functions. Just as a city consists of various buildings and institutions, a cell contains numerous organelles, each responsible for particular life processes. Studying cell structure: how it all started “Nature has created all beings […]

How Do Plant Cells Divide?

Have you ever wondered how plants grow from tiny seeds into towering trees or lush green bushes? The secret lies in their cells! Just like humans and animals, plants are made up of tiny building blocks called cells. But unlike us, plants have a unique way of growing and repairing themselves through a process called […]

Cells: plant, animal and fungi cells

Cells are the building blocks of life. Every living organism on Earth is made up of one or more cells. These tiny structures perform all the functions necessary for life, from providing energy to helping organisms grow and reproduce. But did you know that cells can look and work differently depending on whether they belong […]

Medieval Islamic Astronomy (8th – 15th Century)

The rise of the Arab Caliphate A powerful state—the Arab Caliphate—was formed in the 8th–10th centuries as a result of the conquest wars waged by Arab tribes from the Arabian Peninsula, united under the banner of a new religion—Islam. This vast empire stretched from present-day Iran, Iraq, and Central Asia in the east to North […]

Solar vs Lunar Eclipse: what is the difference?

Eclipses have profoundly influenced human understanding of the cosmos. Ancient civilizations used them to develop sophisticated calendars and predict celestial events. Solar eclipses, in particular, have advanced our scientific knowledge – the 1919 solar eclipse provided the first evidence supporting Einstein’s theory of general relativity by showing that starlight bent around the Sun exactly as […]

Lunar Eclipse: what do you need to know

Lunar Eclipse Key Takeaways A lunar eclipse happens when the Earth passes between the Sun and the Moon, casting a shadow on the Moon. This can only occur during a full moon when the Sun, Earth, and Moon are closely aligned. Unlike solar eclipses, lunar eclipses are safe to view without eye protection and can […]