A distant neutron star has abruptly erupted in brightness, surging to roughly one hundred times its usual output and leaving astronomers scrambling to explain what could drive such a violent change.

Sep. 12—In the cosmic tug-of-war between matter and antimatter, matter has the upper hand. Our universe leans more heavily on the side of matter. In a one-to-one ratio, matter and antimatter would ...

A new study says the cataclysmic event of two neutron stars colliding may also have solved the mystery of why there are so many heavy elements in the universe. Share on Facebook (opens in a new window ...