A scale model is a representation or copy of an object that is larger or smaller than the actual size of the object being represented. Very often the scale model is smaller than the original and used ...

TIMHi, I'm Tim Peake. I'm an astronaut based here at the European Space Agency in Germany, and from December 2015, to June 2016, I spent six months orbiting Earth on the International Space Station.

To find out how much bigger one object is than another, divide the larger value by the smaller. Molecules are made from between 2 and several hundred atoms, so they are larger than the atoms which ...