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 ...

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 ...

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.

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system ...

NASA’s James Webb Space Telescope has provided a direct look at the multiple gas giant planets within the iconic planetary ...

In research highlighted in a new paper, published today in The Astrophysical Journal, Scientia Senior Lecturer Ben Montet and PhD candidate Brendan McKee analysed changes in the timing of a known ...

YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature of its orbit makes it a ...

Could a giant planet between Mars and Jupiter have doomed Earth? A new study suggests that small changes would have been ...

A weak magnetic field likely attracted matter inward, contributing to the formation of the outer planetary bodies, from ...