THINK the sun is yellow? Well you’d be wrong. Author Edward Brooke-Hitching has spent a lifetime searching for weird and wonderful facts about science, history, nature and famous people for his new book and the results are mind-blowing. 4 Astronauts cannot whistle while they work - no matter how hard they try Credit: Getty The Most Interesting Book In The World is full of quirky nuggets of information and trivia that you didn’t know you needed.

Here, Natasha Harding brings you some of the best . . .

1) HAPPINESS can give you a heart attack. A 2016 study by University Hospital Zurich on takotsubo syndrome, otherwise known as “broken heart ­syndrome”, found it can also be set off by happy events, such as your football team winning. The condition refers to when the heart muscle changes shape and suddenly weakens, causing pain, breathlessness and, occasionally, death.

READ MORE ON SPACE HAVING A BALL Watch moment luxury space pod soars into the sky & sees curve of the Earth ROCK ON! Nasa discovers mysterious 'zebra rock' on Mars that is 'unlike any' ever seen 2) FINGERPRINTS – sometimes called “chanced impressions” – start ­forming in the second trimester of ­pregnancy and are influenced by the baby touching the walls of the womb. This is why they are truly unique to every person, even identical twins. 3) IT is impossible for astronauts to whistle while they work.

The air pressure in a space suit is only three Newtons per square centimetre (N/cm2), whereas norm.