Our journey to comprehend the Universe’s edge begins with the concept of the observable Universe. This term refers to the portion of the cosmos that we can theoretically detect from Earth.

String theory may be our best attempt at a theory of everything, except that it can't describe an expanding universe like ...

SPHEREx stands for the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer.

Scientists studying one of the earliest known galaxies using the James Webb Space Telescope have found that the universe's Era of Reionization may have occurred much earlier than previously thought.

Does the universe have an edge? Is time travel possible? What is a black hole, and in what sense are space, time and gravity a matter of "geometry"? The modern theory of spacetime introduced by ...

Spherex (the Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) will survey hundreds of millions of galaxies and "their combined cosmic glow" to give ...