Here are a pair of resources:
The resources are both aimed at early key stage 2 but it could be used at key stage 1.
The photopeach presentation may be quite difficult for key stage 1 however it is an introduction to the solar system and hopefully will get them engaged!
The prezi could then further their knowledge and count as a beginning to their research!
This resource can be useful for an overview lesson because it involves information about different aspects of space. The first resource is a great starter activity that takes 5 minutes and covers some interesting facts that children are unlikely to know!