45) Suppose there are a million inhabitable planets in our galaxy, that one in ten are habitable, that one in a thousand planets with life at some point had an intelligent civilization, and that one in a hundred civilizations that has ever existed is in existence now. Given this, how many civilizations are in existence now?

34) The lack of large impact craters on the surface of Europa is consistent with

20) Why are there no impact craters on the surface of Io?

4) Which of the following cannot be determined with the Doppler technique?

50) Discoveries of extrasolar planets have shown us that

4) Which of the following cannot be determined with the Doppler technique?

39) Which of the following factors influence the surface habitability of a planet?

6) The only place outside of Earth where there is irrefutable evidence for (ancient, microbial) life is

Which of the following lung measurements represents the working capacity of the lung measured by having your patient maximally fill their lungs followed by a single maximal exhalation?

You are a nurse and go to your patient’s room to do routine vital signs monitoring and find that your patient’s bedtime snack was not eaten. This should alert the you to check and assess for: