Animation of the findings by researchers who used time-delay cosmography to independently confirm that the universe’s current ...

Our understanding of the true nature of the cosmos relies on measurements of its expansion, but cosmologists have been ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

Yu-Jing Qin, a postdoctoral researcher at California Institute of Technology (Caltech), led a series of spectroscopic ...

An international team of astronomers using a combination of ground-based telescopes, including the W. M. Keck Observatory on ...

One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

Two strange galaxies that first crossed paths about 25 to 75 million years ago, prompting 'fireworks.' ...

In the spirit of the season, the interstellar comet 3I/ATLAS is changing color as it leaves the sun behind — shifting from a ...

Interstellar object 3I/ATLAS nears Earth with a bizarre 'anti-tail' and 14 anomalies. Is it a comet or alien tech?

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...