5 July 2021 – 16 July 2021

Cosmology from Home 2021 was an online cosmology conference with a novel format aimed at bringing the real-world workshop experience into the virtual domain. The format includes the use of pre-recorded talks, and a combination of asynchronous and scheduled live discussions. A freely-navigated virtual office space also facilitates ongoing, organic discussions. The conference will bring together cosmologists from around the world to discuss the current state of cosmology at the interface of theory and observations.

The topics that were discussed included:

• Inflation and the Early Universe,
• Cosmic Microwave Background and Thermal History,
• Large-Scale Structure of the Universe,
• Dark Matter, Neutrinos and Other Particle Astrophysics,
• Modified Gravity, Dark Energy and Foundations of ΛCDM,
• Gravitational Waves and Multimessenger Astronomy.

Plenary Speakers

ACT & SPT Collaborations (on the latest CMB observations)

Matthias Bartelmann (on nonlinear cosmic structure formation)

CAMELS Project (on their simulations and machine learning)

Catherine Heymans (on weak lensing and large-scale structure observations)

Deanna Hooper (on CMB probes of the early universe)

eROSITA Collaboration (on their x-ray observations of galaxy clusters)

KAGRA Collaboration (on its status and recent gravitational-wave events)

Scott Melville (on positivity bounds from effective field theory)

Azadeh Moradinezhad (on large-scale structure probes of the early universe)

Guilherme Pimentel (on the cosmological bootstrap)

Panel Discussions

Assertively-moderated live discussions among groups of experts on

• H0 Measurements from the Distance Ladder,
• Evidence for and against Primordial Black Holes at LIGO/Virgo/KAGRA.


Marika Asgari (University of Edinburgh)

Shaun Hotchkiss (University of Auckland)

Niko Šarčević (Newcastle University)

Mariana Vargas-Magaña (National Autonomous University of Mexico)

Benjamin Wallisch (Institute for Advanced Study & UC San Diego)

Matthijs van der Wild


Jo Dunkley (Princeton University)

Richard Easther (University of Auckland)

Juan García-Bellido (Universidad Autónoma de Madrid)

Hendrik Hildebrandt (Ruhr-Universität Bochum)

Amanda Weltman (University of Cape Town)

Yuanyuan Zhang (Fermilab)