About 4.6 billion years ago, our solar system formed from a massive cloud of gas and dust. Under the influence of gravity, this material began...
The universal law of gravitation, stated by Isaac Newton, explains why objects in the Universe are attracted to each other. Essentially, the more massive the...
The Earth rotates around its axis in about 24 hours, causing the cycle of day and night. This rotation is responsible for the change of...
Stars, like our Sun, are gigantic balls of gas composed mainly of hydrogen. At their core, the pressure and temperature are so enormous that reactions...
The Moon often appears much larger when it touches the horizon than when it is high up in the sky. However, its actual size does...
Comets are celestial objects mainly composed of ice, dust, and rock. They are often described as primordial remnants of the solar system, dating back to...
The stars twinkle at night due to the interaction of starlight with the Earth's atmosphere. This optical phenomenon is caused by atmospheric turbulence acting as...
The rotation of the Earth around its own axis is the first reason why the Sun appears to rise in the east. This rotational movement...
Gravity is an attractive force that exists between two massive objects due to their mass. It is described by the law of universal gravitation stated...
Galileo was condemned by the Inquisition primarily because of the incompatibility of his astronomical discoveries with religious dogma. His observations challenged the widely accepted idea...
