A signal interpreted as the first light illuminating the Universe may not be from the far reaches of the Universe after all, a new study has found. In fact, it may not even be from space.
"Our non-detection bears out earlier concerns and suggests that the profile found by Bowman et al. is not evidence for new astrophysics or non-standard cosmology."
By about 1 billion years after the Big Bang, the Universe was completely reionized; earlier than this 1 billion year mark, however, we can't really see with our current experiments, which makes the reionization process tricky to understand. If we could detect light from the cosmic dawn, it would be an absolute game-changer.
In early 2020, they floated SARAS 3 out into the middle of remote lakes in Southern India and probed the sky for the signal detected by EDGES.
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