ScienceAlert on MSN

The Solar System May Have Lost 2 Planets, And The Mystery Just Deepened

(Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else ...

One of our planets may be missing, and it could explain why the solar system looks the way it does

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

The Moons of Uranus May Hold the Key to Finding Missing Planets

Jupiter, Saturn, Uranus and Neptune did not always have their current positions in the solar system. According to the ...
IFLScience

The Solar System May Have Ejected A Fifth Giant Planet – Which Would Explain How Uranus Held Onto Its Moons

Looking at the Solar System, Jupiter and Uranus both have plenty of irregular moons. In supercomputer simulations, the ...
The Daily Galaxy on MSN

Scientists uncover evidence of a planet that vanished from our solar system

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

New SwRI model explains exoplanetary systems with compact orbits

Southwest Research Institute scientists propose a new model for the formation of compact exoplanetary systems that contain multiple rocky planets in tight orbits around their star. In this model, ...
BGR

Scientists May Have Found Our Solar System's Missing Ninth Planet

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, ...
SpaceNews

Mystery solved: How the orbits of extrasolar planets became so eccentric

EVANSTON, Ill. — Except for the fact that we call it home, for centuries astronomers didn’t have any particular reason to believe that our solar system was anything special in the universe. But, ...