Unlocking the Universe : Penguin Readers Level 5

Unlocking the Universe takes us on a journey through space and time. It starts 13.8 billion years ago with the Big Bang, which led to the stars, the planets and our Solar System. Then it explores our Solar System and other solar systems - the ones we know, and others we have yet to find.

Unlocking the Universe, a Level 5 Reader, is B1 in the CEFR framework. The text is made up of sentences with up to four clauses, introducing present perfect continuous, past perfect, reported speech and second conditional. It is well supported by illustrations, which appear regularly.