Hawking’s thesis is an insight into an exceptional mind and the first steps of discovery in what has been a remarkable scientific journey. So what is “Properties of expanding universes” about?
On September 15th 2017 the Cassini spacecraft plunged into Saturn disintegrating like a meteor. During the 20 years of its journey, it provided us with unparalleled observations on the most photogenic planet in our solar system. But what were the main discoveries?