Can You Guess What This Is?

No, it's not a portal...
It's not an alien spaceship...
It's a black hole bending a star's light!
A very bright star is located directly behind this black hole. The black hole is warping the spacetime around it, allowing the light from the star to bend around it and be visible to us as the bright ring.

Graphics: SpaceEngine

Music: Symphony no. 1 in C, Op. 21 - III. Menuetto - Allegro molto e vivace by Beethoven