Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

There have been plenty of attempts to resolve the "Hubble Tension" in cosmology. This feature describes how one of the most important variables in cosmology, the expansion of the universe, takes on ...

A closer look at the Lambda Cold Dark Matter model, its core components, supporting evidence, and why new observations are ...

“While 3I/ATLAS is a visitor from interstellar space, travelling from outside the Solar System, its behaviour is completely ...

Six planets are set to align on Saturday, creating a planetary parade that will be visible to sky-gazers across the globe.

On Thursday, Princeton University celebrated its leading role in NASA’s IMAP mission, highlighting how faculty and students are collaborating to study the boundary of our solar system and improve ...

It comes down to the speed at which these objects were moving during their formation, and the strength with which their ...

When you gaze up at the night sky, you’re looking back in time. Light from the stars takes years, sometimes millennia, to ...

This newly discovered jellyfish galaxy, named COSMOS2020-635829, has a redshift of z = 1.156, meaning astronomers are seeing it as it existed about 8.5 billion years ago. That makes it the most ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...