Final answer:
The work of astronomers using radio telescopes to find no new matter in the universe is part of the process of using new data to modify the existing Big Bang theory.
Step-by-step explanation:
The work of astronomers using radio telescopes to find no new matter in the universe, as predicted by the Big Bang theory, is part of the process of using new data to modify an existing scientific theory.
By observing the universe with advanced technology like radio telescopes, astronomers gather new data that either support or challenge existing scientific theories, such as the Big Bang theory. In this case, the data of no new matter being found aligns with the predictions of the Big Bang theory, thus reinforcing and modifying the theory further.
This process of using new data to modify an existing scientific theory is crucial in the development of scientific knowledge and understanding.