The Solar System, home to Earth and countless other fascinating planets and moons, exists within the Milky Way galaxy. But ...

A new celestial object has been uncovered on the edge of our solar system, revealing another piece of the vast puzzle that is our cosmic neighborhood. Discovered using the Subaru Telescope at Mauna ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual orbit that ...

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | Harvard & Smithsonian said in a statement. "It shows that even very distant ...

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one ...

Our Solar System is beautiful, mysterious, largely unknown… and accessible. In the next hundred years, we can send robotic craft, and even human hands, to many of those worlds. We can ride along ...

Our Solar System is full of mysteries, but if the inner planets are a puzzle, the boundary between the Solar System and interstellar space is a secondhand puzzle with half the pieces missing.

The quest to find hidden worlds. Searching for planets lurking in the frigid edges of our solar system is not a new concept. The so-called Planet Nine, a world 10 times more massive than Earth, is ...

Meanwhile, outer dark comets, which may have come from the outer regions of our solar system near Jupiter and beyond, have distinctly oval-shaped orbits and can span hundreds of meters or more.