Yes, astronomers have indeed discovered other solar systems beyond our own. These systems, known as exoplanetary systems, consist of planets orbiting stars other than our Sun. The discovery and study of exoplanets have been a significant area of research in recent decades, and thousands of exoplanets have been detected and confirmed.
The first confirmed detection of an exoplanet orbiting a Sun-like star occurred in 1995, and since then, the number of known exoplanets has grown substantially. Various methods are used to detect exoplanets, including the transit method (detecting the slight dip in a star's brightness as a planet passes in front of it), the radial velocity method (observing the slight wobble of a star caused by the gravitational pull of an orbiting planet), and more recently, direct imaging.
The discoveries have revealed a wide range of exoplanetary systems with diverse characteristics. Some systems resemble our own solar system, with planets orbiting at various distances from their host star, while others have unique configurations such as hot Jupiters (large gas giants close to their star) or multiple planet systems with tightly packed orbits.
These discoveries have significantly expanded our understanding of planetary systems and have raised intriguing questions about the prevalence and diversity of planets in the universe. The study of exoplanets continues to be an active and exciting field of research, with ongoing efforts to explore and characterize these distant worlds.