This is a guide to the exploration of the heavens and to the discoveries made thanks to powerful new telescopes, which have revealed a universe very different from the one we were used to.
For thousands of years, astronomy relied on the human eye to observe the sky. But the stars do not just emit visible light: they also produce and radiate other types of light, from radio waves to gamma rays.
Here, the author shows us a much more energetic, violent, variable and unpredictable cosmos, where neutron stars pack more mass than the Sun into a 10-km-radius sphere. He explains how infrared rays can be used to observe the birth of a star and the formation of a planet.