ABC News contributor Father James Martin discusses the characteristics that cardinals might be looking for in the next pope.

For the first time, astronomers have probed the physical environment of repeating X-ray outbursts near monster black holes ...

Scientists have discovered the elusive properties hidden within promethium, a rare earth element that has remained largely ...

Central to physics are ideas such as energy, mass, particles and waves. Physics attempts to both answer philosophical questions about the nature of the universe and provide solutions to ...