Now we know why Mercury is so hot.....and....can we blame global warming on the speed of the earth....friction after all must have a little currency in a vacuum....
hi, I promised my daughter to create with her a Solar System model. I think it was 7 years ago and she keeps reminding me about that promise. The idea was to create a physical model of the Solar System but because of the lack of time I made her a digital version and she was happy. I will sit...