Quantum physics informs us that a system exists in superposition — that is, in all possible states — until we observe that it is only in one specific state. According to a 2002 poll of …
What Is a Nuclear Meltdown?
What is Dark Matter? The second largest component of the universe is dark matter. The truth is, we understand little of what it is, and more of what it is not.
Gironi dellinferno di Dante (Foto via capaccionelpallone.it)
https://www.google.it/search?q=sewer map creator d&d
Reading "Dante's Inferno" was a nightmare. This handy chart may be better than Cliff Notes!
Dark Energy & Dark Matter The two largest pieces of the Universe that we know the least about, yet nothing less than the ultimate fate of the Universe will be determined by them.