text: Hey Jodie, I thought you were supposed to be really smart.  Hydrogen is a gas.  Pi is an abstract concept (the ratio of the circumference to the diameter of a circle).  Multiplying them makes no sense.  \nIt's kind of like asking what is a cardboard box times anxiety.\n\nYes, I sort of figured you weren't the real Jodie Foster (I agree, she is great though).  So what exactly do you mean by the term Pi?\n\nOooh, I found something, it has to do with SETI, check out this web page:  \nhttp://www.setileague.org/askdr/pi.htm