Fallout 3 Mothership Zeta DLC Interview

Polish website Polygamia has cranked out a quick interview with Bethesda's Brian Chapin about next week's Mothership Zeta addon for Fallout 3. Scroll down for the English version:
We know that the main quest in this add-on will be to escape from the spaceship. How many side-quests and achievements can we expect from it?

There aren't any explicit side quests, but Mothership Zeta is a pretty big place. While you'll be receiving three of the four achievements from completing the main quest line, you'll have to do some searching off the beaten path to get the last achievement. And it's worth exploring just to see everything that the aliens are up to -- they've been doing some pretty strange things.