majestic cosmic nebula with brimming stars in the quiet universe, ideal for space exploration and astronomy themes

cosmic nebula stars universe space exploration astronomy galaxy celestial night sky cosmos dark beautiful vivid science astrophotography wonder colorful distant mysterious travel interstellar outer dust aweinspiring serene tranquil vast infinite horizon majestic luminous ethereal vibrant stellar dreamy observatory telescope milky way illustration galactic background deep mystical bodies art photography scientific astrophysics breathtaking stargazing mesmerizing ai generated