Did the Universe Really Begin from Nothing?
From Grains of Sand to Fundamental Particles If the Sun were a single grain of sand on a vast beach, the number of stars in the universe would exceed all ...
From Grains of Sand to Fundamental Particles If the Sun were a single grain of sand on a vast beach, the number of stars in the universe would exceed all ...
Motion, Rotation, and an Unexpected Problem When we observe the universe, nothing appears to be truly at rest. From the smallest particles to the largest cosmic structures, everything is in ...
Rotation as a Fundamental Property of Black Holes Rotation, or angular momentum, is one of the most common properties of celestial objects in the universe. Stars rotate, planets rotate, galaxies ...
Infinity as a Concept in Physics and the Universe Infinity is a familiar idea in mathematics and philosophy, yet it becomes deeply problematic when applied to physical reality. In everyday ...
Gravity, Mass and the Strange Geometry of Black Holes In classical physics, gravitational acceleration depends on two quantities: mass and radius. For ordinary planets, this relationship is intuitive. A larger ...
Light, Motion and the Relativity of Time One of the most fundamental facts of the universe is the invariance of the speed of light. No matter how fast an observer ...
Light Is Not Just What We See When we look at the stars, what reaches our eyes is not matter, sound, or force — it is light. More precisely, it ...
Why Gravity Is the Weakest Force Yet Creates Black Holes At first glance, gravity appears to be the weakest of the four fundamental forces in the universe. Compared to the ...
Earth is often described as a paradise of life — a fragile blue world where existence has quietly persisted for billions of years. From our daily perspective, life feels ordinary, ...
Welcome back. After a long break, I want to continue talking about a topic that is never truly old—black holes.In the previous video, there were many different opinions, especially about ...
Welcome to Jack's Galaxy, you will have lots of fun.