In 2003, astronomers using ESO telescopes played a key role in linking long-duration GRBs with the ultimate explosions of massive stars, known as'hypernovae'.
Astronomers using ESO telescopes played a key role in. This was in 2003. Astronomers using ESO telescopes were linking long-duration GRBs with the ultimate explosions of massive stars'. This was in 2003. Massive stars were known as' hypernovae.