In the organizer's words:

Once upon a time there was a space probe called Rosetta. One night it was launched into the sky. A long, long journey lay ahead of it, on which the secrets of our solar system were to be uncovered. On board was Rosetta's constant companion, the Philae lander. The destination of the journey was a comet called "67P/Churyumov-Gerasimenko".
On the long journey from Earth into space, you will learn from Rosetta and Philae what it takes to explore a comet up close. You will also find out what you can find out about comets with missions like Rosetta.

Price information:

Recommended from 6 years, duration approx. 60 minutes (reduced tickets for children up to 18 years / pupils / trainees / students / volunteers / recipients of citizen's allowance / severely disabled persons from 50%) Full price 6 euros / reduced price 4 euros. Please purchase tickets in advance on our website! (planetarium-bremen.de)