PSYCHOLOGY - the science of behavior and mental processes.
Harvard astronmer Owen Gingerich reports that there are more than 100 billion galaxies. Just one of these, our own relative speck of a galaxy, has some 200 billion stars, many of which, like our Sun-star, are circled by planets. On the scale of outer space, we are less than a single grain of sand on all the oceans beaches, and in our lifetime but a relative nanosecond.
Yet there is nothing more awe inspiring and absorbing than our own inner space. Our brain is by far the most complex physical object known to us in the entire cosmos. Our consciousness - mind somehow arising from matter remains a profound mistery. Our thinking, emotions, and actions, and their interplay with others' thinking, emotions, and actions, fascinate us. Outer space stagers us with enormity, but inner space enthralls us (Myers, 2009).