The "cubit" is an ancient unit of measurement for length that was historically used in various cultures, including ancient Egypt, Mesopotamia, and the Hebrew Bible. It was typically based on the length of a person's forearm from the elbow to the tip of the middle finger. As a result, the actual length of a cubit could vary from region to region and even from person to person.
In the United Kingdom and other parts of the world where the British imperial system was historically used, a cubit was typically defined as roughly 18 inches or about 45.72 centimeters. This is often referred to as the "British cubit."
However, it's important to note that the cubit is an ancient and non-standardized unit of measurement that has largely fallen out of use in modern times. Today, standardized units such as feet, meters, and inches are used for precise measurements, and the cubit is primarily of historical and cultural interest.
The average distance from Earth to the Sun is about 149.6 million kilometers (or approximately 93 million miles). This distance is often referred to as an astronomical unit (AU), which is a standard unit of measurement used in astronomy to describe distances within our solar system. An astronomical unit is defined as the average distance between the Earth and the Sun.
It's important to note that the Earth's orbit around the Sun is not a perfect circle but rather an ellipse, so the distance between Earth and the Sun varies slightly throughout the year. The value given here represents the average distance. The closest point in Earth's orbit to the Sun is called perihelion, while the farthest point is called aphelion. Perihelion occurs around early January, and aphelion occurs around early July. At perihelion, Earth is approximately 147.1 million kilometers (about 91.4 million miles) from the Sun, while at aphelion, it is about 152.1 million kilometers (around 94.5 million miles) away.