We think that life came from non-life, from the increasing complexity of chemical reactions between biomolecules present on the primordial Earth. But what about the universe? How did it come to be if there was nothing before?
Navajo encryption boxes seen at right in 2003 employ principles of quantum physics. The latest research has shown the ability to run larger networks with less such hardware.
Elise Amendola/Associated Press
An artist's impression shows the area around a supermassive black hole at the heart of the galaxy NGC 3783 in the southern constellation of Centaurus. Could a wormhole connect one black hole to another elsewhere in the Universe, creating an entangled pair?