Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

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

Exoplanets have captured the imagination of the public and scientists alike and as the search continues for more, researchers ...

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

These rocky bits eventually coalesced to form the terrestrial planets. However, at a distance of around 4 astronomical units from the Sun (AU; 1 AU is the average Sun-Earth distance of 93 million ...

With the exception of Pluto, planets in our solar system are classified as either terrestrial (Earth-like) or Jovian (Jupiter-like) planets. Terrestrial planets include Mercury, Venus, Earth ...

Because many close-matching simulations had the planet-like object swooping through the inner solar system, the researchers created an additional 10,000 simulations including the terrestrial ...