A genuine filmed interview of **Georges Lemaître** from 1964
resurfaced. We can all listen to the inventor of the “Big-Bang”,
talking about his own theory, in French.

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The next cosmology seminar takes place on **Friday 2nd** of
December, seminar **room E349** at **2pm**. Our guest speaker will be
**Davide Dal Cin** from SISSA (Trieste, Italy).

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Bubble nucleation is a phenomenon ubiquitous in physics, with
applications ranging from the geometry of tree crowns, the structure
of porous media and of sphere packing. Bubbles also find applications
in cosmology such as the characterization of cosmic voids in the large
scale structure and the signatures of cosmological phase
transitions. In a new preprint, **Pierre**
proposes a new method to determine the fractal properties of the
so-called Random Apollonian Packing.

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The next cosmology seminar takes place on **Friday 30th** of
September, seminar **room E349** at **2pm**. Our guest speaker will be
**Nilanjandev Bhaumik** from the Indian Institute of Science (Bangalore, India).

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Cosmic Inflation, the most favoured scenario of the early Universe,
implies that all forms of matter and radiation observed today are the
outcome of quantum fluctuations occurring around the event horizon of a
exponentially fast accelerating space-time. Clearing the ground for
the incoming spatial and ground based cosmological observations,
**Pierre** and
**Christophe** have derived, at an
unprecedented level of precision, the shape of the expected power
spectra of both the quantum-generated gravitational waves and
curvature perturbations.

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