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 ...

Prepare for an unforgettable 'parade of planets' as 7 planets will align in a rare celestial event on Feb. 28, for the last ...

Another finding was how dramatically the planets varied in brightness over just three years. The team discovered that PDS 70 ...

Credit: Google "Now you can visit these places — along with many other planets and moons ... the maps of at least some of the moons appear to have mislabelled craters and features.

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 ...

The Magellan Adaptive Optics Xtreme (MagAO-X) has provided some of the clearest images ever taken of planets forming around a ...

The occasion will see Mars, Jupiter, Mercury, Venus, Saturn, Uranus, Neptune and Mercury align, with some of the planets ...