• Question: with your job as a physicist, does this interest link to space? (as you said you'd like a small telescope)

    Asked by maze354car to Philippe on 14 Jun 2019.
    • Photo: Philippe Gambron

      Philippe Gambron answered on 14 Jun 2019:

      Looking at stars is nice. Of course, what is interesting is not just to look at beautiful things but understand how they work and, for that, you need more than a small telescope. But there are many things that we can learn simply looking at the sky. For example, the sky is very homogeneous. There are roughly the same number of galaxies everywhere.

      Science Results

      Of course, there are clumps of matter but, on large distances, the density is more the same. You would expect that of the ingredients of a dough if it has been mixed well enough. But the different parts of the Universe are too far away to have been able to mix up. So we suppose that they have been able to mix up during the very first moments and then it has expanded very quickly. This theory matches what we see in the cosmic microwave background.