🧪 Something cool Pulsar Timing Arrays can do - constrain the masses in our Solar System and look for any unmodelled masses that might be tugging at the Solar System Barycentre - such as the gravitational signature of hypothetical Planet9. https://academic.oup.com/mnras/article/481/4/5501/5113478

A spoon full of pulsar would make ... a really bad idea! The material that makes up neutron stars (which pulsars are one sub-category) is extremely dense. A single sugar cube would weigh as much as all of humanity combined. Also - very explody if you take it away from the neutron star's gravity.