"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

The scientists who precisely measure the position of Earth are in a bit of trouble. Their measurements are essential for the ...

NASA, ESA, and ground observatories have detected powerful space explosions caused by black holes tearing apart massive stars ...

NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight ...