Context: There is some evidence, in the form of ice cores drilled to about 400 m (1,300 ft) above the water line, that Lake Vostok's waters may contain microbial life. The frozen surface of the lake shares similarities with Jupiter's moon, Europa. If life is discovered in Lake Vostok, it would strengthen the argument for the possibility of life on Europa. On 7 February 2008, a NASA team embarked on a mission to Lake Untersee, searching for extremophiles in its highly alkaline waters. If found, these resilient creatures could further bolster the argument for extraterrestrial life in extremely cold, methane-rich environments.

Question: What lake is thought to contain microbial life?
Answer: Lake Vostok

Question: To what does the frozen surface of Lake Vostok resemble?
Answer: Europa

Question: With what is Europa associated??
Answer: Jupiter's moon

Question: When did NASA go on an expedition to Lake Untersee?
Answer: 7 February 2008

Question: For what was NASA searching?
Answer: extremophiles

Question: What lake on Europe may conatin microbial life?
Answer: Unanswerable

Question: What planet might contain life?
Answer: Unanswerable

Question: What lake has a frozen surface similar to Jupiter?
Answer: Unanswerable

Question: Who emberked on a mission to Lake Vostok in 2008?
Answer: Unanswerable

Question: What was NASA searching for in Lake Vostok?
Answer: Unanswerable

Question: What was drilled to about 400 ft?
Answer: Unanswerable

Question: What might Vostok's Lake contain?
Answer: Unanswerable

Question: What do the waters in the lake share similarities with?
Answer: Unanswerable

Question: Where did a NASA team go on 8 February 2007?
Answer: Unanswerable