Hubble telescope captures outer space smiley face

The Hubble Space Telescope is known for its incredible photos of outer space, but this maybe the happiest image it's captured. The galaxy cluster SDSS J1038+4849 appears to be smiling for the camera!

The glowing eyes are two very bright galaxies, according to NASA, and the smile is caused by an effect known as gravitational lensing, where the incredible gravitational pull from the massive galaxy structure actually warps the spacetime around them.

The Hubble telescope has been in orbit since 1990. Check out some other incredible Hubble images in the gallery below.