The Dolphin Nebula is a planetary nebula in the constellation Cassiopeia, it lies an estimated distance of 5,200 light years away from Earth.

The abandoned Russian satellite, Resurs-P1, has exploded into more than 100 pieces, with the reasons for the explosion still unclear. This unexpected event has raised concerns among the international space community due to the potential dangers posed by the debris....

The center of our galaxy is about 26,000 light-years from Earth. Now if you look at the constellation Sagittarius you are looking at the center of our galaxy. If you look at the picture of our galaxy with tens of...

The light year or unit of light is the unit we usually use to describe the distances between stars and galaxies. But given the size of the universe, the unit of light year is not enough. The unit used for...