Scientists think they have found the cause of mysterious movements at the edge of our solar system – and it is not Planet Nine. At the very edge of our neighbourhood, some objects appear to be ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find, announced ...

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan, ...

OUR Solar System used to have an extra planet that ‘escaped’, according to new research. Scientists at the Carnegie Institution for Science are claiming there was a third ‘ice giant’ between Uranus ...

Planet Nine is a theoretical world lurking in the darkness of space in the far fringes of the solar system, beyond the so-called Kuiper Belt – an asteroid belt past the orbit of Neptune. Astronomers ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression shows the "inside out" planetary system around the star LHS 1903. - ESA An exoplanetary system about 116 ...

It's a question that has baffled scientists around the world for years. Is there really a ninth planet hiding in our solar system? And if so, how do we find it? Now, researchers from Rice University ...

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

Astronomers have discovered that the Jupiter, the largest planet in our Solar System, was once so big that it could have held 2,000 Earths. Jupiter is our system's oldest planet, forming from the dust ...

WHETHER or not you believe in life beyond Earth, there are actually a minimum of 100 billion planets in our universe, according to a Nasa study. But how many planets make up our solar system? Please ...