Let's rewind the clock back…oh, I don't know, let's say a hundred years. It was 1917, and Einstein had just developed his general theory of relativity. It was a masterpiece, giving us our modern-day ...

The cosmic dawn 21-cm signal is a highly sensitive probe of any process which injects energy into the intergalactic medium, enabling novel searches for anomalous energy injection by through dark ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 119, No. 12 (March 22, 2022), pp. 1-9 (9 pages) Light propagation on a two-dimensional curved surface embedded in ...

Andreea Font receives funding from Science and Technology Facilities Council (STFC). For the past few years, a series of controversies have rocked the well-established field of cosmology. In a ...

If you’ve ever looked up at the night sky and felt a sense of awe at the enormity and mystery of the universe, you’re not alone. We humans are curious animals, but understandably focused on our day-to ...

ABSTRACT: We develop a theory of cosmology, which is not based on the cosmological principle. We achieve this without violating the Copernican principle. It is well known that the gravitational ...

Astronomers believe the first galaxies formed around giant halos of dark matter. But a newly discovered galaxy dating to roughly 13 billion years ago mysteriously appeared long before that process ...

Astronomical observations reveal hierarchical structures in the universe, from galaxies, groups of galaxies, clusters and superclusters, to filaments and voids. On the largest scales, it seems that ...