What type of science? Operational science or Historical science?
Darwin introduced historicity into science. Evolutionary biology, in contrast with physics and chemistry, is a historical science—the evolutionist attempts to explain events and processes that have already taken place. Laws and experiments are inappropriate techniques for the explication of such events and processes. Instead one constructs a historical narrative, consisting of a tentative reconstruction of the particular scenario that led to the events one is trying to explain. Ernst Mayr, November 24, 2009
As Mayr points out the experimental method is not applicable in some cases.
If you want a broader definition may I suggest that science is simply using observation and reason to understand the natural world. Experimentation would certainly be a part of that where it is appropriate.