A vintage pulp sci-fi magazine cover illustration, in the style of 1960s science fiction and fantasy art by Frank Frazetta. The dynamic oil painting captures two heroic astronauts in bulky, retro-futuristic spacesuits with clear bubble helmets engaged in a fierce ground battle against a snarling horde of green, scaly lizard-people on a desolate alien planet. One astronaut fires a retro laser-rifle with a brilliant yellow beam, while the other strikes a defensive pose. In the mid-ground, rugged, tracked military vehicles and sleek, silver rocket ships with burning tail flames are active on the dusty, cratered terrain. Above them, a dramatic, blazing crimson-red and orange sky is filled with thick dark clouds and twin glowing moons. Rich chiaroscuro lighting with deep, velvety shadows, heavy painterly brushstrokes, and a gritty, warm analog magazine art texture.