No, the Hubble Space Telescope doesn't only use visible light. While it does have instruments that observe in the visible light spectrum, it also has instruments that observe in other parts of the electromagnetic spectrum:

* Ultraviolet (UV): Hubble's UV observations are crucial for studying hot, young stars, distant galaxies, and the composition of planetary atmospheres.

* Near-infrared (NIR): This allows Hubble to see through dust clouds, study cool objects like brown dwarfs, and observe the early universe.

Hubble has a variety of cameras and spectrographs designed to capture light from different parts of the electromagnetic spectrum. This allows astronomers to study a wider range of celestial objects and phenomena, providing a more complete picture of the universe.

So, while Hubble does use visible light, it's not limited to it and has expanded our understanding of the cosmos by capturing light beyond what our eyes can see.