Many photos McCarthy has taken of the space station in the past show the ship as a silhouette in Earth's shadow. This time he ...

New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

Fast-moving stars zooming through our galaxy might have been slingshotted from a large black hole inside the neighbouring ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

After hundreds of hours of observations, researchers captured a highly detailed image of a long filament of the "cosmic web" ...

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...