Neil deGrasse Tyson – Astrophysics For People In A Hurry Audiobook
Can we make it bigger than the Universe? Not sure… This vast one seems so far away and so complicated to us, but it is a false idea. We are an integral part of this Universe and it does not seem more complicated than that, even if it still hides many mysteries. Science loves simplicity.
Simplicity is the watchword in this book by the very famous Neil DeGrasse Tyson. Popularizer recognized around the world, he invites you to explore, without going into too much detail, this world in which we move.
But how did it all start? What was there at the start? the big bang is certainly a word you are familiar with. If no observation of this phenomenon is possible, the laws of physics succeed perfectly in going back in time. All the time ? No, alas, it all ends when those laws no longer apply, when we hit that singularity, much less than a second after the big bang. Neil deGrasse Tyson – Astrophysics For People In A Hurry Audiobook.
Then, this cosmic soup will cool down, continue to expand, give birth to new particles… the cosmic diffuse background is the first map of the universe. Obtained thanks to data from 3 satellites, including the European Planck which provided the most resolute, this map shows inhomogeneity, micro temperature differences which may seem insignificant. Insignificant, really? Not that much, since that’s where the stars and galaxies will form. Or the galaxies and the stars (who appeared before: the egg or the chicken?).
I said at the top that science does not like complexity. However, there are certain phenomena that we still cannot explain today. Which ? Two major issues currently in the Universe do not allow us to identify the nature of 95% of the matter that makes up our Universe. On the one hand, we have dark matter, invisible, and which can be seen in the rotation of galaxies. And on the other, we have the dark energy, responsible for the accelerated expansion of the Universe. Several avenues are being pursued, but none today seems to satisfy the scientific community. Of course, the road on these two themes will still be very long.
So much for this little summary of this book which I enjoyed reading. Simple, with a few touches of humor, and which gets to the point without losing the reader too much. Suitable for people in a hurry yes, but also for the more patient beginner!