VIII Global 21-cm Workshop

Dates: Sept 22nd - Sept 25th, 2025

The Global 21-cm signal from neutral hydrogen offers a unique window into the earliest epochs of cosmic history, shedding light on the formation and evolution of the first stars, galaxies, and black holes. As a key probe of the Dark Ages, Cosmic Dawn, and the Epoch of Reionization, this signal has the potential to transform our understanding of the early Universe. Following the tentative detection reported by EDGES in 2018 and subsequent efforts by experiments such as SARAS3, which reported a non-detection, the field has seen rapid advancements in instrumentation, data analysis, and theoretical modelling. Both ground-based and future space-based missions continue to push the boundaries of what is possible in global 21-cm cosmology.

This year's conference, hosted at Caltech, will bring together researchers from across the community to discuss the latest developments, ongoing challenges, and future directions. The program will feature invited talks and contributed presentations covering theoretical, observational, and experimental aspects of the field. Dedicated discussion sessions will provide a forum for exchanging ideas, addressing key uncertainties, and charting the path forward. We look forward to a stimulating and collaborative meeting.

• Emilie Storer

• Harry Bevins

• Mayuri Rao

• Nivedita Mahesh

• Peter Sims

• Saptarishi Bandopadhyay

• Saurabh Singh

• Tzu-Ching Chang

• Emily Kuhn

• Joe Lazio

• Nivedita Mahesh

• Ruby Byrne 

• Saptarishi Bandopay

• Stephanie Cha-Ramos 

• Akshatha Vydula