The strongest material in the universe has been discovered: nuclear pasta from neutron stars. The material is so intense it could never exist on Earth—if somehow a tiny amount were transported here, it would explode like a nuclear bomb. Instead it can be found deep inside the crust of the smallest, densest known stars, scientists have discovered via computer simulations…
…” if somehow a teaspoon of nuclear pasta magically teleported into the palm of your hand you’d die instantly because without the pressure of the star to hold it together it would explode like a nuclear bomb. Put simply, despite its strength, no one is going to build anything out of this stuff.”
According to phys.org, the nuclear pasta would be around 10 billion times stronger than steel.
Source: Nuclear Pasta: Strongest Material in Universe Discovered in Neutron Star Crust