THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial.

Not every planet has a moon – so why do some planets have several moons, while others have none? I'm a physics instructor who ...

For circumbinary exomoons, our research shows that it would be best to search in systems that have a wide binary separation, as stable moons were able to orbit at up to 10% of their planet's hill ...

With frigid temperatures and dangerously cold wind chills, you may want to wait a few more days to check them out. Don't worry - they're not going anywhere.

Moon along with Mercury; Earth's neighbours Venus and Mars; Jupiter and Saturn will align in a straight line and will be ...

It has a surface temperature of over 470°C. Only two of the terrestrial planets have moons orbiting them: Jupiter is the largest planet in the solar system and has 79 moons. The four largest ...

Charon and Earth’s moon are both a large fraction of the size of the main body they orbit, which is unlike other smaller moons orbiting planets throughout our solar system. (Pluto has four ...

In 2025, there will be two partial solar eclipses. A partial solar eclipse occurs when the moon moves between the sun and ...

Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a subsurface ocean on the icy dwarf planet.