The James Webb Space Telescope is pushing the boundaries of our understanding of the universe, capturing galaxies formed just ...

If it is a galaxy, it would be the oldest known galaxy in the cosmos, but it could also be a brown dwarf or an early black ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing new insight on the evolution of the universe ...

Led by doctoral student Tatsuya Kotani and Professor Tomoharu Oka from Keio University, the research team measured the temperature of the cosmic microwave background radiation, which is the faint ...

The plot represents the new model with the x-axis and the y-axis showing the minimum sizes of collapsing and expanding regions that can impact cosmological measurements. The contours are independent ...

Just as ocean waves shape our shores, ripples in space-time may have once set the Universe on an evolutionary path that led to the cosmos as we see it today. A new theory suggests gravitational waves ...

The universe is a slow-changing place. While it's mostly true that the heavens and the deep-sky objects in it will look largely the same across an average human lifetime, there are dramatic examples ...

The original version of this story appeared in Quanta Magazine. In 1950 the Italian physicist Enrico Fermi was discussing the possibility of intelligent alien life with his colleagues. If alien ...

The Big Bang is often described as the explosive birth of the universe – a singular moment when space, time and matter sprang into existence. But what if this was not the beginning at all? What if our ...

Are we alone? It's one of the most basic questions of human existence. People have been trying to answer it for millennia in ...

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe is gravitationally attracting all the other matter in the universe; ...

Findings from a new study into the cosmic "afterglow" may rewrite the history of the universe, according to researchers. This afterglow—the "cosmic microwave background" (CMB), the relic radiation ...