Book Two in an action-packed adventure series - which also explores the three great physics theories of Albert Einstein!

Gedanken's eccentric uncle sends her into outer space in a spacecraft to help him conduct a series of experiments regarding the law of relativity as it affects

This is the final volume in the trilogy for young readers investigating the three great physics explorations of Albert Einstein. Uncle Albert's niece Gedanken d

'Where is the centre of the universe?' 'Why is water wet?' 'What are atoms made of?' 'Will the sun ever blow up?' Fresh from Uncle Albert's postbag here are 100

A history of the idea of "black holes" explores the tumultuous debate over the existence of this now well-accepted phenomenon, focusing particular attention on