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General Science / Re: Question of the Week - Old Version
« on: 28/01/2005 09:22:11 »
Here's this week's QOTW
"HOW DO WE KNOW HOW FAR IT IS TO DISTANT GALAXIES - SUCH AS THE ANDROMEDA GALAXY WHICH IS 3 MILLION LIGHT YEARS AWAY ?"
"HOW DO WE KNOW HOW FAR IT IS TO DISTANT GALAXIES - SUCH AS THE ANDROMEDA GALAXY WHICH IS 3 MILLION LIGHT YEARS AWAY ?"