You can hear each movement below. Each one is quite long, you don't have to listen to the whole thing but skip through to get a feel for the piece. Think about the differences between each one.
If you are particularly interested in this music by Holst - or Space in general - this programme is well worth watching. Hosted by scientist Brian Cox, The BBC Symphony Orchestra play all 7 movements, with a back drop of incredible images taken from Space and lots of interesting facts about the planets from Brian Cox himself.