One of our big achievements in cosmology over the 20th century was auditing the universe. We discovered that 25% of the universe is visible and 75% of it is not but of that 75%, we couldn't get any ...

Scientists have known for 70 years that there is much more mass in galaxies than can be seen. For example, spiral galaxies rotate at speeds that are only possible if the total mass of the galaxy is ...

Observations from the European satellite Gaia allow for the refutation of a controversial alternative theory and support the presence of an invisible component constituting the majority of the ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Astronomers have detected a mysterious gamma-ray glow from the Milky Way’s halo, potentially marking the first direct observation of dark matter. In a study published November 25, 2025, in the Journal ...

Andreea Font does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Ulrik Egede does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...