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 ...

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 SPHEREx telescope will create the most colorful map of the cosmos, while the four satellites of the PUNCH mission track ...

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 ...

So exactly how many solar system moons have we found ... "The simplest definition [of a moon] would be an object that is in an orbit around a larger, non-stellar object," Ashton told Live Science.

Gravity provides the force needed to maintain the stable orbit of planets around a star and also of moons and artificial satellites around a planet. The moons around planets in the Solar System ...

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