Eleven-year-old Oliver wants to be an astrophysicist and explain the wonders of the universe to anyone who will listen to him! This brand-new fully illustrated series is perfect for fans of Diary of a Wimpy Kid, The 13-Storey Treehouse, and anyone who loves to laugh and learn at the same time. Oliver has just started secondary school and is wondering how he will fit in with new friends, new classes, and new everything. But at least there's one thing that still makes sense: science! Determined to be an astrophysicist one day, Oliver explains everything he learns - like how the sun burps, how ghost particles fly through you, and most importantly, how the Big Bang is basically just like a fart in the school hallway. With the help of his favourite teacher, Dr. Howard, he sees how complex scientific theories can actually help him understand his own exploration of the dark, mysterious universe that is secondary school. With laugh-out-loud humour and cartoon-style illustrations from bestselling writer Jorge Cham, Oliver's Great Big Universe is the first book in a STEM-themed, diary-style series.