A. Nicolas Gilbert
B. William Gilbert
C. Edwin Powell Hubble
D. All of these
🧠 Explanation:
Edwin Powell Hubble is known as the father of modern cosmology, expanding universe understanding. For astronomy students, this highlights cosmology, making it a key topic for studying physics, astronomy, and history of science. Hubble’s work redefined galaxies. Understanding this clarifies cosmic evolution. It’s essential for analyzing astronomy, physics, and cosmology. Studying Hubble offers insights into how discoveries shape science, crucial for astronomy, physics, and history.