We visited the spaceguard centre on a recent visit to Wales and I have to say it soils an otherwise brilliant holiday. The so called 'director' we extremely rude at every possible point and made us feel as if we were a huge inconvenience to him.
I certainly wouldn't recommend taking children as they are not welcome, in fact the 'director' recommended using a grenade on children which I found extremely offensive especially as my daughter is always very well behaved. It is a shame that he doesn't want to pass on his knowledge to the next generation.
To give you an idea if the space guard centre, it is a very rude man who has set up a telescope in his back garden and charged people to look at it.
I would not recommend this as a trip to anyone.