That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that ...

This score means that it’s likely to have been engineered instead of being a naturally occurring force.

A million-light-year bridge of stars links merging galaxies in Abell 3667. This optical evidence confirms a cosmic collision.

A cosmic formation known as the 'dumbbell nebula' will be visible from Earth in August. Will you need a telescope to see it?

Using one of the most detailed sets of observations ever of a galaxy cluster 700 million light-years from Earth ...

In a preview of observations that will be made routinely by the Vera C. Rubin Observatory, astronomers found evidence ...

In a preview of observations that will be made routinely by the Vera C. Rubin Observatory, astronomers found evidence indicating that a galaxy cluster ...

Firing the top US economic statistician is the administration’s latest step in dismantling the government’s research ...

When you say the world “space” in the United States most people think of Southern California, Texas or maybe Florida. The Bay ...

If you imagined that capturing a cosmic speedster was as easy as aiming a rocket and blasting, forget it intercepting ...

"Initially, it'll just be a new tool, an augmentation to the existing toolbelt of astronomical observatories. But ultimately, it should scale least expensively to the smallest or more distant ...

Harvard's Avi Loeb suggests comet 3I/ATLAS could be alien tech, but most scientists say it's a natural interstellar object with no threat to Earth.