It seems not easy to define a question for analytical research paper. Here is one of my suggestions. Was it truthful, unreal intelect or focused and hardworking personality that led to professional achievements?

My question for the research paper is: Why did Marie married Pierre?

At first, I wanted to find out what made Marie want to become a scientist. Then I realized that this question would not deal with her whole life completely, so I changed my focus to how she achieved such a big fame.

My research question will be directed at the medical implications of Maries working environment and the irony of Marie losing her life as a result of discovering a way to save others. I shall be looking at the effects of radiation on her health and how they contributed to her death.
I am also interested in how she could have prevented having such devastating effects and perhaps prolonged her life.

Having decided to write about Marie Curie's motherhood I could think only of one question: What kind of mother Marie was? But after some research reading I found myself asking more questions: Was it some kind of special circumstances that influenced her attitude? Were there personal characteristics or social factors that played a big role in her sometimes being insensitive to her children emotional needs? I think those questions can give me a broader perspective of my topic and make it more interesting to write about.

It is so hard to me to begin the introduction of the research paper.

My reasearch question is:How did Marie's childhood contribute to her sense of identity?

Does the Baruch Library have Marie Curie's Biography?

Re: Does the Baruch Library have Marie Curie's Biography?
Yes, but they were checkout by other students.
Brooklyn College Library should copies.
Look in their catalog. You can be access it from Baruch's library.

What happens when all your sources contain the same answer to your research question?