Science, Maths & Technology
How long would it take to colonise the galaxy?
...of magnitude, because say, resources are short, or it really takes 1000 years to cover 10 light-years. This article is adapted from The Open University course Planetary Science and the Search For Life Clarification: In the process of bringing this item from book to web, a rogue digit '1' appeared prior to the commas in some numbers. This odd maths has now been corrected....