The universe we live in is empty mainly in terms of matter density. The protons and neutrons that constitute matter are called baryons, and approximately one proton exists in a space of 19.8 square meters. However, when the universe expands rapidly, the cosmic background radiation, known as a photon, is produced, resulting in two billion more photons in a grain of light. Since this light is a microwave, which has low energy and a long wavelength, it cannot be seen by the human eye. Therefore, humans, who only perceive visible light, consider the universe and the night sky to be dark. If there were aliens capable of seeing microwaves, the universe would be shining very brightly. The truth is that nothing has changed, but if the standards shift, it’s an entirely different story. - Joseph’s “just my thoughts”
Every day, I examine the world map. When I zoom in, the map reveals a world I have yet to discover. There are countless unknown places on this planet that I have not experienced. By observing the geography, countries, and attractions, I can learn about history and broaden my perspective on the world. Looking at the map prompts me to reconsider space, time, and culture. For instance, in the Bering Strait, Big Diomede Island belongs to Russia, while Little Diomede Island is part of the United States, and the distance between them is only 3.7 kilometers. The International Date Line passes between these two islands. Even if we were to cross the distance by ship, it would take about 9 minutes at a speed of 15 knots. However, after those 9 minutes, we would find ourselves a full 21 hours behind. This situation illustrates that time is more of a human agreement than a mere physical measurement. Ultimately, learning and personal development are fueled by continuous questioning and doubt. ...