Light

It started off first with a little tree

Then garland and wreath for all to see
Simple decorations as in days of yore
But humans; well, they always want more
So then the neighbours began a race
Now the lights are seen in outer space
A manmade object of brightest light
Strong enough to disturb the Martians night
It is a wonder they plan to visit en masse
For even they feel the power of Christmas