Win a NASA Apollo 15 watch worth £300!

This month, every How It Works reader has a chance to win a NASA Apollo 15 American Moonphase watch by Xeric Watches. The lunar design celebrates NASA’s triumphant mission to the moon in 1971. Along with a pair of lunar hands and a luminous glow-in-the dark coating, this watch tracks the Moon’;s journey through its 29.5-day cycle. 

For a chance to win, answer the following question:

 


For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today!