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

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system.

NASA scientists have recently made a groundbreaking discovery about potential alien life within our own solar system, a ...

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

NASA is tracking an object that is entering the solar system at approximately 245,000 km/h. This interstellar visitor is ...

Two recent studies used seismic data from NASA’s retired InSight mission to shed light on what lies beneath Mars’ surface and what it means for the planet’s history The spacecraft will map the ...

3I/ATLAS, an interstellar object currently zipping through the solar system, is capturing the attention of astronomers, the public and even most of our deep space assets. Its hyperbolic orbit tells us ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...