...but know that your answer will depend on the gender of said scientist: http://www.buzzfeed.com/annanorth/what-male-and-female-scientists-say-about-women-in Women are underrepresented in science in general, but the gender gap is bigger in some fields than others: physics, for instance, has a much lower percentage of women than biology. Researchers decided to ask scientists themselves why they thought this was — and male and female scientists turned out to have pretty different ideas.
Updates on astronomy and parenting in paradise...er, Pasadena. Wait, make that Cambridge, MA.