An illustration capturing the essence of vintage 70s sci-fi book covers: a sleek, retro-style alien spacecraft rests on the rugged terrain of an otherworldly exoplanet. In the foreground, two astronauts in classic white and orange space suits are exploring the scene with curiosity. Hovering in the expansive sky, a massive green gas giant looms, its swirling clouds casting a magical glow over the landscape. Subtle details like distant rocky formations and shimmering stars in the background add depth, while maintaining a nostalgic yet uniquely modern artistic flair.