When I asked the class if they knew how many planets there were in our solar system some answered 9, but my grandson said; Well, there might be 10. Only then did I realize that he was actually retaining the things I would talk to him about regarding space.

I read your post and thinks it's great what you do in your communities. I'm a flicker of light to your spotlight and have learned much from your post and interactions. Thanks again!
When I posted 'What is time'. I literally meant it as I was up for 20 hours with work and the class on Monday, a 3 hour sleep and up again working so my posting has been limited.

I have a NASA flight jacket, but I don't wear it, only put STS mission patches on it and plan on giving it to my grandson someday.

Pluto...Well, let's wait 10 years for the Horizons Mission to help us determine it's status. Meanwhile, I'm in the planet camp. Besides the gas giants are more like stars than the inner rockies. ;-)