Many million miles above us so they say
Shines a host of stars they call the milky way
Watch on a pleasant night
And see there a path of white
The milky way
So they say

Now and then I wonder if the stars each day
Get their cream and butter from the milky way
Still I can not see how, because why?
They have no cow
The milky way
So they say

References:

Solar System:
http://en.wikipedia.org/wiki/Solar_system

Milky Way:
http://en.wikipedia.org/wiki/Milky_way

Stephen Hawking:
http://en.wikipedia.org/wiki/Stephen_hawking

Nova - The Legacy of E = mc2:
http://www.pbs.org/wgbh/nova/einstein/legacy.html