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 ...

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 ...

The eight major planets of our Solar System orbit the Sun in the same flat plane ... put cameras on sea lions' backs to help them map the elusive ocean floor. Scientists are preparing to drill ...

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 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.

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