Charged Dark Matter Could Explain Universe's Early Chill

Charged Dark Matter Could Explain Universe's Early Chill
N.R.Fuller/National Science Foundation via AP

A recent astronomical observation that the ordinary matter in the early universe was much cooler than expected could be explained if a small proportion of dark matter has a tiny electric charge. That is the claim of Julian Muñoz and Abraham Loeb at Harvard University in the US, who say that further evidence to confirm or refute their hypothesis should be forthcoming in the next few years. However, some astrophysicists remain sceptical of the original observation itself.

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