The formation of the Earth-Moon-Sun system dates back billions of years. According to a widely accepted theory, the Moon was created after an object the...
The shepherd's star is named after the specific period of the year during which it shines most intensely in the sky. In fact, this star, also known...
Shooting stars are not really stars. They are small rocky or dusty pieces, remnants of comets or sometimes asteroids, called meteoroids. They wander in space...
The sky is blue thanks to Rayleigh scattering, a physical phenomenon that relates to how sunlight travels through the air. Sunlight contains all visible colors, but not...
The Earth rotates on an axis that is not straight like a perfectly vertical top, but slightly tilted at about 23.5 degrees. It is because...
A black hole typically appears when a massive star reaches the end of its life. At this stage, there is no more nuclear fuel to...
The celestial bodies were observed very closely because they clearly dictated the daily life in the ancient Mediterranean. The Sun indicated when to start and...
Stars are not always perfectly uniform: they often have darker areas called starspots, similar to the sunspots on the Sun. When the star rotates, these...
Some stars are simply not stable: their internal layers contract and expand periodically, much like a beating heart. This stellar "breathing" is related to imbalances...
The Greek astronomer Eratosthenes estimated the circumference of the Earth in the 3rd century BCE. He used a simple yet ingenious method by observing the...
