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	Size comparison between Earth and Mars

How big are space objects?

23 August 2004
Astronomers can tell us very accurately the size of objects in our Solar System, but often the numbers are just too big for us to really comprehend.

Sometimes it helps to visit a place, to see how big things are, such as going up the Eiffel Tower or climbing in the Alps, but we can not all go into space to see for ourselves! So here are some well-known parts of our Solar System - seen next to places on Earth which you might recognise - so we can get a better impression of just how big these space objects are.