Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Unlike our Sun, which is a relatively low mass star and which will gradually fade before expanding into a red giant at the end of its life, larger mass stars undergo extreme explosive events when they ...

The end of a star's life can occur in a tranquil manner in the case of low mass stars, such as the Sun. This is not the case, however, for very massive stars, which suffer such extreme explosive ...

A very bright burst of gamma-rays was observed on March 29, 2003 by NASA's High Energy Transient Explorer (HETE-II), in a sky region within the constellation Leo. Within 90 min, a new, very bright ...

In theory, a supernova thousands of light-years away could release gamma-rays that would fry most life on Earth. But the star must be positioned exactly right for this to ever happen, and there’s no ...

The link between gamma ray bursts (GRBs) and supernovae has been a confusing one. GRBs are highly energetic jets that blast from massive star explosions, but not all powerful supernovae produce them.

The death of a star can sometimes be among the most spectacular occurrences in the universe. Everyone has heard of supernovae-these are great events in the death of a massive star that blast amounts ...

LIKE many doctors, Shri Kulkarni and Kris Stanek carry pagers to alert them to emergencies. But they are not physicians; they are astronomers. When their pagers ring, there has been a crisis somewhere ...

This analysis confirms the existence of a jet emerging from the nucleus of the star, producing the GRB, and adds a new component to the picture During the early phases, the jet interacts with the ...