Scientists have long debated why Earth and Mars lack certain essential elements. A new study reveals that these missing ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Earliest inner solar system planetesimals shaped the inventory of moderately volatile elements in terrestrial planets.

Researchers found How Violent Events During Earth's Formation Led to the Scarcity of Moderately Volatile Elements (MVE) Like ...

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a host of other puzzles connected to the solar system's deep past ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

In these simulations, the orbits were warped by the passing of an object between two and 50 times Jupiter's mass, which plunged deep into the inner solar system as it traveled. "This [mass] range ...

Get Instant Summarized Text (Gist) Research using a 3D model explored the impact of a hypothetical super-Earth between Mars and Jupiter on our solar system's inner planets. Simulations with ...