Apollo 13 launched on April 11, 1970. Two days later came the famous “Houston, we’ve had a problem here” – now often misquoted

◆ Moonquakes are caused by tidal stresses connected to the distance between the moon and Earth.

◆ A UK STUDY IN 2013 FOUND THAT YOUNG CHILDREN ASK AN AVERAGE OF 300 QUESTIONS PER DAY – THAT’S ONE QUESTION EVERY TWO-AND-AHALF MINUTES!

◆ An enzyme in pineapples works as a meat tenderiser, breaking down proteins. It’s so strong, pineapple processors wear gloves to stop it eating their skin!