It was the year 1275 when Alfonso X the Wise was traveling with his daughter, Infanta Leonor, to meet with Pope Gregory X in France. The young woman, about 19 years old and the fourth of the king's eleven legitimate children, died suddenly on the journey. Her father…

The James Webb Space Telescope (JWST) has discovered the most distant active supermassive black hole to date, located in a galaxy, CEERS 1019, that existed only about 570 million years after the Big Bang. The object emerged very early…

The origin of Earth's water is a question that has vexed scientists for decades. Some believe the liquid element arrived from space, aboard comets and asteroids, which released it as they fell to Earth...

The function of a cell cannot be separated from the other cells of our body, although the idea of the cell as an isolated atom still persists.