YouTube thumbnail about a black hole, with an accretion disk, gravitational lensing, an arrow and an amazed host

Prompt

A thumbnail for a video explaining black holes. The image is a scientifically accurate and visually stunning rendering of a black hole, showing the accretion disk and gravitational lensing effect. A large, white arrow points to the singularity. The YouTuber’s face is in the corner, looking amazed. The title “What’s INSIDE a Black Hole?” is in a futuristic font. This showcases the ability to render complex scientific phenomena accurately. –ar 16:9