The growth of satellite megaconstellations is changing how we see the universe. These large networks of satellites circle close to Earth, supporting communication and navigation but making it harder for astronomers to observe the sky. Bright satellites leave streaks in long-exposure images, especially during twilight, disrupting important data collection. Wide-field surveys that cover big parts of the sky are most affected, as multiple satellites often pass at once, forcing scientists to correct or discard images. Radio telescopes face growing noise as satellites transmit signals close to scientific frequencies. This interference can drown out faint cosmic signals vital for studying galaxies, black holes, and the early universe. Space telescopes in orbit also face challenges. Crowded orbits mean satellites must dodge thousands of moving objects, which drains fuel and shortens mission life. Satellite surfaces scatter sunlight, increasing background brightness that reduces the clarity of faint celestial objects. Space debris adds risks by threatening sensitive sensors. Scientists seek solutions like darkening satellites and better debris tracking, but success depends on worldwide cooperation. The expanding satellite population demands new methods to protect the night sky for science. Balancing technology and astronomy will shape the future of space research.