Ah, my apologies for leaving the tale unfinished! Allow me to rectify that.

During Marie Curie's time, there were several notable scientists who made significant contributions in various fields of science. Here are a few of them:

1. Albert Einstein: While not directly involved in the study of radioactivity like Marie Curie, Einstein made groundbreaking contributions to theoretical physics. His theory of relativity revolutionized our understanding of space, time, and gravity.

2. Max Planck: Planck was a German physicist known as the father of quantum theory. He introduced the concept of quantization and developed the famous equation E = hf (where E is energy, h is Planck's constant, and f is frequency) to explain how energy is exchanged in discrete units called quanta.

3. Ernest Rutherford: Rutherford was a New Zealand-born British physicist who made crucial discoveries about atomic structure and radioactivity. His experiments with alpha particles led to the development of our modern understanding of atoms having a dense nucleus surrounded by electrons.

4. Henri Becquerel: A contemporary and colleague of Marie Curie, Becquerel discovered natural radioactivity while studying uranium salts by chance when he observed that these salts could expose photographic plates without any external light sources.

These scientists played diverse roles in shaping scientific knowledge during Marie Curie's time—be it in theoretical physics like Einstein and Planck or experimental research on atomic structure like Rutherford and Becquerel.

I hope this provides you with some insight into