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

Astrophysicist and author Neil deGrasse Tyson explains the theory behind the growing evidence about a possible hidden planet ...

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

From unreliable grids to uninterrupted power, engineer Sohan Naik’s solar journey with Power Planet lights up villages, farms ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

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

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of particles that shoot out from the Sun.

NASA and the European Space Agency are tracking the 3I/ATLAS interstellar object as it travels past Mars on its way toward the Sun and through the solar system.

"It was just a matter of time before we found them." ...

Some habitable worlds orbiting dead stars could be kept alive for aeons thanks to a quirk of Einstein’s theory of gravity ...