neutron star?
The nucleus consists of protons and neutrons.
No and it collapsed many years ago.
Proton normally exist in nucleus. Along with it are neutrons.
No, this material doesn't exist.
The isotope carbon-40 doesn't exist !
a neutron!!! (:
a neutron! :)
That is called a neutron star, or a pulsar.
A Neutron Star
A Neutron Star
A neutron star.
A Neutron Star
Not surprisingly - a neutron star. See related question.
The nucleus consists of protons and neutrons.
no
No and it collapsed many years ago.
Theoretically silver 47 would have no neutrons but it does not exist.