Thursday, July 10, 2025

Observing the Dark Ages of the Universe from the Far Side of the Moon

An artist’s impression of the UK-led CosmoCube spacecraft, which would orbit be tasked with listening out for an “ancient whisper” from the early universe on the far side of the Moon. Credit Nicolo Bernardini (SSTL Ltd) & Kaan Artuc (University of Cambridge)

Shortly after the Big Bang, after the CMB was released, there was a time that's tricky to observe called Cosmic Dark Ages. Clouds of hydrogen could be detected at that time using a specific frequency of radio waves, but Earth's radiation introduces too much noise. Researchers are proposing a CubeSat called Cosmo Cube that could orbit the Moon, observing when it's in the quiet radio shadow cast by the Moon. It could help detect the first structures coming together, leading to the formation of the first galaxies.



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