Astronauts
Astronauts
Prof. Dr Astrid Kaiser (Institute of Educational Sciences)
If we observe closely what is happening around us, we will find plenty to marvel at and discover. For example, if you hold a spoon under a stream of water, there is a big difference depending on whether you hold the top or the bottom of the spoon towards the water. In one case, the stream of water takes the shape of a mountain; in the other, the shape of a valley. 
Why is that? And why do apples turn brown when we cut them open? They keep longer if left uncut! There are lots of fun experiments through which we can discover important facts about nature and technology – for example: ‘Why does an astronaut need a space suit?’ In this lecture, various amazing experiments will be demonstrated, and every child will get to have a go themselves at least once.