A passing star could disrupt the orbits of the planets and cause the Earth to be flung off into deep space.
The previously unseen world is believed to orbit far out at a range of 838 times Earth's distance from the Sun.
Despite being closer to the size of Jupiter than the Sun, Barnard's Star is at the center of its own little solar system.
Millions of years ago, our solar system stood in the path of a veritable tsunami of gas and dust.
Scientists now believe that our solar system may have once been visited by something very large indeed.
The comet comes from an enigmatic and colossal cloud of planetesimals that surrounds our solar system.
The age of huge, expensive satellites is giving way to the age of small, cheap satellites that can be launched en masse.
The smallest planet in our solar system may be hiding a treasure with a value beyond imagination.
One of the most unusual comets in the solar system is due to make its closest approach of the Earth today.
This latest in a long line of ridiculous conspiracy theories is perhaps the most nonsensical one to date.
A team of planetary scientists has found new evidence of an undiscovered planet in the outer solar system.
Fragments of the space rock rained down over Tatahouine, Tunisia - the filming location of Tatooine in Star Wars.
Orbital inconsistancies indicative of a mysterious hidden planet in our solar system may have an alternative explanation.
Planetary scientist Prof Monica Grady examines Loeb's claims concerning spherical metallic fragments found on the ocean floor.
PhD candidate Evgenii Krestianinov looks at the secrets revealed by a space rock found in the Sahara back in 2020.
Astronomers believe that there is a small chance that a rogue planet could have been 'captured' by the Sun's gravity.
Pellet-beam propulsion has the potential to enable a spacecraft to cross the entire solar system within 5 years.
A meteor from another solar system landed on Earth back in 2014, but obtaining more information about it has proven challenging.
It turns out that Saturn and the other gas giants are not the only planetary bodies in our solar system to have rings.
Jupiter's status as the planet with the most moons in our solar system has now officially been restored.