We can thank
our relatively big Moon for keeping this degree of tilt so stable.
Planetary scientists think that
our relatively big Moon, and the axis tilt itself, were created by enormous collisions Earth experienced early in its formation 4.5 billion years ago.
Not exact matches
The first clear view of Pluto's
big moon Charon revealed tantalizing details, including evidence that the
moon has been geologically active
relatively recently.