Questions from Modern Physics

Q: Is it possible that some parts of the universe contain antimatter whose

Is it possible that some parts of the universe contain antimatter whose atoms have nuclei made of antiprotons and antineutrons, surrounded by positrons? How could we detect this condition without actu...

Q: Does the universe have a center? Explain.

Does the universe have a center? Explain.

Q: Does it make sense to ask, “If the universe is

Does it make sense to ask, “If the universe is expanding, what is it expanding into?”