Back to today’s briefing

Story perspectives

New Findings Challenge Big Bang Models: Universe Heated Early

9/30/2025

50 12

Summary

Story summary

International Centre of Radio Astronomy Research (ICRAR) reports the Universe heated up 800 million years after the Big Bang, challenging models.
The Murchison Widefield Array searched Epoch of Reionization signals.
The absence of a cold Universe signature implies the intergalactic medium was heated before reionization.
Techniques developed over a decade improved data quality for the hydrogen line.

1 of 1

Story summary

International Centre of Radio Astronomy Research (ICRAR) reports the Universe heated up 800 million years after the Big Bang, challenging models.
The Murchison Widefield Array searched Epoch of Reionization signals.
The absence of a cold Universe signature implies the intergalactic medium was heated before reionization.
Techniques developed over a decade improved data quality for the hydrogen line.