Question 6: Hypotheses regarding the origin(s) of extraterrestrial life, if it exists, are as follows: one proposes that it may have emerged, independently, from different places in the ________.
Question 8: The ________ mission, initiated by the French Space Agency, was launched in 2006, and is currently looking for extrasolar planets; it is the first of its kind.
Question 9: Scientists are directly searching for evidence of unicellular life within the ________, carrying out studies on the surface of Mars and examining meteors which have fallen to Earth.