When it comes to astronomical questions, it doesn't get much bigger than the one Numberphile recently attempted to answer: How many particles in the universe? Given that an estimated five trillion ...

Researchers can use a metric called the particle number concentration (PNC) to calculate the number of particles in a sample, such as the number of marbles in a jar. Subscribe to our newsletter for ...

The key test passed by sPHENIX to prove it is ready to measure the properties of quark-gluon plasma is called a "standard candle" in particle physics. This isn't to be confused with Type 1a supernovas ...

If you collected up every Sars-CoV-2 virus particle in the world, it would fit inside a soft drinks can, writes the mathematician Christian Yates. When I was asked to calculate the total volume of ...