Mikrotähtien

Mikrotähtien is a Finnish term that translates to "microstars" in English. In astronomical contexts, it generally refers to very small and low-mass stars. These objects are distinct from planets and brown dwarfs, though the precise definitions can sometimes overlap depending on specific classification schemes. The term is often used informally to describe stars that are at the very low end of the stellar mass range, such as very low mass red dwarfs or even hypothetical objects near the hydrogen-burning limit. These stars are significantly cooler and dimmer than the Sun, and their interiors may not achieve the temperatures and pressures necessary for sustained hydrogen fusion in the way larger stars do. The study of mikrotähtien is important for understanding the complete spectrum of stellar populations and the processes of star formation. Their low luminosity makes them difficult to observe, often requiring sensitive telescopes and specific detection techniques. The existence and characteristics of these minimal stars contribute to our understanding of stellar evolution and the distribution of matter in the universe.