How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in ...

A new paper examining and simulating the formation of wide-orbit planets has put the chances of our own Solar System ...

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

For the unversed, "Planet Nine" is a hypothetical planet which is reportedly larger than Earth that is thought to orbit beyond Neptune.

Researchers believe that 2017 OF201s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger ... that early Jupiter was at least double its contemporary size. The primitive version of the gas giant could have ...

Astronomers have discovered that the Jupiter, the largest planet in our Solar System ... formed in the Solar System, Jupiter was 2 to 2.5 times its current size. They also found that its magnetic ...

As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system now consists of eight planets, nine dwarf planets, 891 confirmed moons or ...