Afterglow alerts astronomers to gamma-ray burst
Energetic explosion’s remnant detected by California telescope
![Gamma ray burst](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/04/ag_gammaray_free.jpg?fit=860%2C460&ssl=1)
STARBURST These images from the Samuel Oschin telescope show the sudden appearance of a bright flash (middle frame, in crosshairs) that gradually faded (right). All three photos were taken within several hours on Feb. 26, 2014.
Courtesy of Brad Cenko