I believe that the answer is the sun
Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. ... Protons and neutrons are bound together to form a nucleus by the nuclear force.
Explanation:
<span> the part separating two chambers, such as that between the nostrils or the chambers of the heart</span>