# How many neutrons are there in a teaspoonful of a neutron star and if stacked end on end, how far would these neutrons reach? [closed]

I am not a physicist nor a student of physics. I am just an old man that wonders. As such, I probably do not belong in this society. I've had a long interest in neutron stars. This interest began when a PBS scientist (physicist?) commented on a program (probably NOVA) that "a neutron star would be cool to the touch (about 80 degrees F), and a teaspoonful would have about the same mass as Mt. Everest". (I'm so sorry that I don't remember her name but the thought excited me.) Thank God (oops) that two neutron stars decided(?) to collide in my lifetime when it was possible that this collision was detectible. This collision (and its detection) created a new widespread interest in neutron stars. I'm sure that the data from this collision will be analyzed (and argued) for many years (long after I'm gone). And thank God (oops again) that the gravitational waves decided (ok, happened is a better word, but decided is sexier) to get here before the light did. That gave us enough time to locate it, film it, and analyze it. Ok, my ignorance is showing here and maybe this would have happened anyway. But I think it really convenient for us to get the gravitational waves first. Really? Earth size globs of gold and platinum. (Hitch up your wagons boys).

So 5.5 Pg of neutrons is $3.3 \times 10^{39}$ neutrons. Their diameter is 1.75 fm--so end-to-end: