Astrid, the au pair from outer space. By Emily Smith. BBC Cover to Cover ISBN 1-35549-331-4 2001 (1hour) Astrid is from the planet Antalusia, five hundred light years away. Keen to study the human family, she gets a job looking after one! Harry and his mum definitely didn’t expect someone with a floating suitcase, a miniature spaceship and huge hair-but although she’s never seen a vacuum cleaner before Astrid is a great au pair. The question is, how long will she stay?