A vintage 70s-style illustration depicts an alien spacecraft landing on a rocky exoplanet. Two astronauts, clad in retro-futuristic space suits, explore the terrain with curiosity. In the sky, a massive green gas giant looms, its swirling clouds casting an ethereal glow across the landscape. The scene is infused with a nostalgic, otherworldly charm, capturing the spirit of adventure and discovery. Whimsical alien flora dot the planet's surface, adding a hint of the unknown to this cosmic tableau.