However, there do also seem to be lunar and solar cycles which take
place over longer timescales, e.g., the 18.6 year lunar cycle.
Not exact matches
Collisions take
place over very
long timescales compared to the length of our lifetime — several tens of millions of years.
Though typical galaxy collisions take
place over what to us seems a
long timescale, they are short compared to the lifetimes of galaxies.