A powerful new tool comes online this year that could help astronomers locate the mysterious planet hiding somewhere beyond ...

Six planets will seem to line up along their orbits, with four of them bright enough to be visible without a telescope ...

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...

The Webb telescope — a scientific collaboration between NASA, ESA, and the Canadian Space Agency — is designed to peer into ...

For centuries, humanity has gazed at the stars, unraveling the mysteries of celestial motion. But what if the unusual orbits ...

The discovery of two new planets beyond our solar system by a team of astronomers from The University of Warwick and the ...

A strange asteroid-comet hybrid that orbits between Jupiter and Neptune could reveal key details about the birth of our solar ...

The potential discovery of a large planet beyond Neptune’s orbit could change everything we know about the Solar System.

“By analyzing the reflectivity, and the orbits, we found that our solar system contains two different types of dark comets.” Inner dark comets can be found within the inner solar ...

“Our own solar system is done making planets and all we have are the leftovers ... Distance is also a challenge since the ...

These solar system objects are like icy asteroids and have orbits comparable to or larger than Neptune's orbit. Prior to the new UCF-led study, TNOs were known to be a diverse population based on ...

Outer dark comets are larger – about a mile wide in size – and on more elliptical orbits farther out in the solar system. Inner dark comets are smaller – typically 1,000 feet in size – and on circular ...