Astronomy is the scientific study of celestial objects, space, and the physical universe as a whole. It encompasses the observation and analysis of stars, planets, comets, galaxies, and nebulae, as well as the underlying cosmic phenomena that govern their behavior and interactions. Astronomy seeks to understand the origins, evolution, and characteristics of these celestial entities and the universe itself, employing methods and tools from physics, mathematics, and chemistry. The field can be divided into several sub-disciplines, including observational astronomy, which focuses on the use of telescopes and other instruments to collect data, and theoretical astronomy, which involves the development of models to explain astronomical phenomena. Ultimately, astronomy plays a crucial role in advancing our knowledge of the cosmos and our place within it.
Asteroid "2024 YR4" presents a 2% collision probability with Earth in December 2032. Estimated to be 40-90 meters wide, YR4 poses a potentially significant impact risk. Global space agencies are…