Scientists investigating mysterious radio signals coming from outer space have finally uncovered where ... scientists now believe they may be coming from a pair of dead stars. Scientists say the red ...

After one such explosion blows a star's outer layers into space, the core remains—but it no longer produces nuclear fusion. With no outward pressure from fusion to counterbalance gravity's ...

The Serpens Nebula is a prime location for studying the formation of stars and planets. It is approximately 1,300 light-years from Earth.

burning the last of its hydrogen and causing the star's outer layers to expand outward. At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and ...