Leaders arrived Monday for the start of a three-day Group of Seven summit hosted by Canada in its Rocky Mountains. Countries ...

Want more depth and drama in your shots? Learn when and how to use foreground elements to take your landscape photography to the next level.

Dark matter affects how stars move within galaxies, how galaxies build up over time, and how everything in the universe is held together—but no existing tool has directly detected it. While dark ...

Astronomers detect an ultramassive black hole weighing 36 billion suns in the galaxy LRG 3-757, a record thanks to gravitational lenses.