A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Astronomers have discovered fresh evidence suggesting the possible existence of an unseen planet in the far reaches of our solar system.

NASA unveiled the result of the research that analyzed over 40 years worth of old satellite data to add more into the ninth ...

The interstellar comet 3I/ATLAS, with its massive size, record speed, and mysterious Milky Way origin, has scientists like ...

Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

Astronomers have discovered new evidence that suggests the possibility of an unknown planet in our solar system's farthest ...

Anyone who studies planetary formation would relish the opportunity to get a close-up look at an interstellar object. Sending ...

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit their stars in unexpected, elongated paths. Unlike their close-orbiting ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, ...

A new peer-reviewed study finds that early planet formations were assembled from fragments of earlier bodies within the Solar System.

Harvard professor Avi Loeb claims 3I/ATLAS could be an alien spacecraft. Arizona State University professor Steven Desch is ...

The universe is truly magical: vast, mysterious, and endlessly fascinating. There’s something almost unreal about being able ...