All the lights of the cosmos

The universe is bathed in electromagnetic radiation from all wavelengths, from the longest, radio waves, which can have tens of kilometers, until gamma rays, a billionth of a millimetre.
Of all the electromagnetic spectrum and we are only able to charge a estrechísima strip sandwich between the infrared and ultraviolet.

The largest optical and infrared telescopes in the world

They are the twin Keck telescopes, located at the summit of the extinct volcano Malina Kea in Hawaii.

They have eight stories tall and weigh 300 tonnes.
Each has a mirror 10 meters, with 36 hexagonal segments, and together create a single reflecting surface.