Émissaire extraterrestre tenant un astrolabe lumineux dans des ruines cosmiques

Cinematic full-body portrait of an alien researcher, the "Emissary of the Void". His body is a translucent, shimmering obsidian crystal humanoid, filled with swirling nebulae and dying stars. He wears a fragmented, ancient gold spacesuit that looks like church stained glass, cracked but holding the void inside. He holds a glowing astrolabe that maps non-existent dimensions. Background is an abandoned alien library floating in a gas giant's storm. Style: Hyperrealistic, dark fantasy, cosmic horror, volumetric fog, dramatic rim lighting, 8k, Artstation trending, intricate details, movie poster aesthetic. --ar 16:9