# What is the most dense object in the universe?

Inspired by this answer to the question, Why is the Sun's density less than the inner planets?, what is the most dense object in the universe?

• Are you excluding singularities? May 17, 2016 at 14:52
• A singularity isn't observable and may or may not exist. May 17, 2016 at 15:05
• I'd say Trump would be in the top 3. May 18, 2016 at 17:04

At present there are a couple of neutron stars with mass of about $2M_{\odot}$ (Demorest et al. 2010; Antoniadis et al. 2013. Depending on the exact composition and equation of state at their centres these should have densities of around $2 \times 10^{18}$ kg/m$^{3}$ at their centers and average densities of $\sim 10^{18}$ kg/m$^3$.