Astronomical measurements

Astronomical measurements refer to the techniques used to quantify distances, sizes, and movements of celestial objects. Common units include light-years for distance, which is how far light travels in a year, and astronomical units (AU), the average distance from the Earth to the Sun. Telescopes are used to observe and gather data, while methods like parallax and redshift help astronomers determine distances and the speed of objects. These measurements allow scientists to understand the scale of the universe and the behavior of stars, planets, and galaxies, providing insights into their formation and evolution.