While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

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.

This provides another piece of the puzzle to understand how planets and ... New studies offer a clearer picture of how the outer solar system formed and evolved based on analyses of trans ...

Many of these near-match scenarios had the object zooming through the inner solar system, which prompted the researchers to add the terrestrial planets — Mercury, Venus, Earth and Mars ...

These embryos, somewhere between small planetesimals and fully formed planets, were abundant ... they could only have formed in the inner solar system. "Angrites are a small group of ancient ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

In the paper, the researchers describe how they modeled the orbits of the four outer planets and performed ... which plunged deep into the inner solar system as it traveled.

USC scientists have made a groundbreaking discovery about the nature of the Earth’s enigmatic inner core, revealing for the ...