Cosmology from Home 2021 (AMA)

We are a bunch of cosmologists from the Cosmology from Home 2021 conference. Ask us anything, from our daily research to the organization of a large conference during COVID19!

We have some special experts on

* Inflation: The mind-bogglingly fast expansion of the Universe in a fraction of the first second. It turned tiny quantum fluctuation into the seeds for the galaxies and clusters we see today
* The Cosmic Microwave background: The radiation reaching us from a few hundred thousand years after the Big Bang. It shows us how our universe was like, 13.4 billion years ago
* Large Scale Structure: Matter in the Universe forms a “cosmic web” with clusters, filaments and voids. The positions of galaxies in the sky shows imprints of the physics in the early universe
* Dark Matter: Most matter in the universe seems to be “Dark Matter”, i.e. not noticeable through any means except for its effect on light and other matter via gravity
* Dark Energy: The unknown field causing the universe’s expansion to accelerate today
* “The Hubble Tension”: Measurements of the universe’s expansion rate, which are almost identical but, mysteriously, slightly discrepant (aka the [sigh] “crisis in cosmology”)

And ask anything else you want to know!