With each mass, she modeled 2 million years of orbit to find what kind of architectural impact each mass would have on our solar system. Specifically, she tracked changes to the other planets ...

The eight planets in our solar system orbit the sun in roughly the same plane ... Read more This mind-blowing map shows Earth’s position within the vast universe Never is this more apparent ...

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...

The solar system is made up of the Sun (our nearest star) and the objects that orbit around it, including planets, asteroids and comets. Planets orbit the Sun in roughly circular paths ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it.