A massive interstellar object passing through our solar system during its formative years likely altered the orbits of planets into trajectories observed today, a new study says. Interactions with ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Add Yahoo as a preferred source to see more of our stories on Google. artist impression of a large exoplanet If you were to perfectly follow the steps in An Idiot's Guide to Making a Solar System, you ...

The early solar system may have been far more chaotic than we ever imagined. A new study published in Icarus suggests that ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

There's a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic mystery. Astronomers have cataloged a frozen minor planet called 2017 OF201, ...

Most planet-forming disks have warps that can lead to planets on inclined orbits, which could explain where the tilt of Earth's orbit came from. When you purchase through links on our site, we may ...

There's something big missing from our solar system — and that may be a good thing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Planetary ...