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 ...

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 ...

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.

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.

Like the planets in our solar system orbit the sun, most exoplanets also orbit a star. To date there are over 5500 known exoplanets confirmed by NASA, with trillions more predicted to exist within ...

They also orbit near their stars, in many cases closer than Mercury is to the Sun. Our solar system, in contrast, appears to be different. “[Planetary scientists] have thought our solar system ...

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 ...