Star Formation Rate

Star Formation Rate (SFR) measures how quickly new stars are being created in a galaxy, typically expressed as the mass of stars formed per year (e.g., solar masses per year). It indicates the galaxy's level of stellar activity and growth. For instance, a galaxy with an SFR of 10 solar masses per year is forming enough new stars to add about ten times the Sun's mass annually. Understanding SFR helps astronomers study galaxy evolution, how galaxies develop over time, and the conditions that influence star birth across the universe.