When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The mass of Stein 2051 B, a white dwarf star located about 18 light-years from Earth, has been a ...

Matter with negative mass, a seeming impossibility, could actually have existed in the early universe, a new study shows. A novel solution to Einstein’s equations for gravity permits the existence of ...

Celebrating a native son who had to flee the Nazis, Germany opened festivities Wednesday marking the 100th anniversary of Albert Einstein’s theory of relativity and the 50th anniversary of his death.

Roughly a century ago, Albert Einstein predicted that whenever starlight passes by a closer object, that object's gravity would act as a sort of lens, magnifying and distorting the light. While ...