När en asteroid störtar mot jorden kämpar en beslutsam lärare för att rädda sina elever – kosta vad det kosta vill.

Någonstans i utkanten av vårt solsystem inträffar det otänkbara. En gigantisk asteroid kolliderar med en mindre himlakropp och ändrar riktning - med kurs rakt mot jorden. De brinnande meteorregn som slår ner med förödande kraft är bara ett förebud om vad som ska komma. Bara några dagar från att nå atmosfären närmar sig Kassandra; en meteor lika stor som tre Mount Everest, och med kraften att på ett ögonblick förinta allt levande på planeten Jorden.

In this two-part series, we take a look at the monumental discoveries underway, specifically surrounding black holes and meteorites. Black holes have been revealed as one of the foundations for the basic conditions of life. Through black holes, life is possible in an infinite number of places in space. We also follow how meteorites brought the basic substances of life to our planet, allowing for its creation. The films describe the latest findings concerning cosmic events in relation to the origin of life, providing a grandiose perspective of what makes life possible.

Agent Z And The Penguin From Mars was a 1996 Children's BBC sitcom, based on the book of the same name by Mark Haddon.

The six episode series followed the exploits of Ben Simpson, played by Duncan Barton, and his friends Barney, played by Andrew McKay, and Jenks, played by Reggie Yates, who together formed the "Crane Grove Gang", named after the street where they lived. This was a society dedicated to playing ingenious practical jokes in an initiative called "Agent Z".