An illustration inspired by 1970s sci-fi book covers, depicting an alien spacecraft perched on the rocky surface of a distant exoplanet. Two astronauts stand nearby, one pointing towards the horizon. Above them, a vast green gas giant dominates the sky, its swirling patterns partially obscured by wisps of atmospheric clouds. The scene is bathed in an otherworldly glow, with hints of vibrant colors reflecting off the spacecraft's metallic surface. Mysterious alien flora adds a touch of the unknown to the foreground, as distant mountain ranges stretch out under the looming, colorful expanse of the alien sky.