An international team used 40 years' worth of data from two space probes to track down what they believe are signs of this ...

The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from ...

"What are sometimes called superbugs — microbes resistant to every available drug — are not merely the stuff of nightmares.

On the eve of his 100th day in office, President Trump is focusing heavily on immigration. The president is signing two ...