he eight levels of Penguin Readers follow the Common European Framework of Reference for language learning (CEFR). Exercises at the back of each Reader help language learners to practise grammar, vocabulary, and key exam skills. Before, during and after-reading questions test readers' story comprehension and develop vocabulary. Is there life in space? Will people be able to travel to extra solar planets in the future? Learn about astronauts, space stations and space travel in Life in Space.