Astronomy

Appearing and disappearing stars

A group of objects appearing and disappearing at the same time have been detected for the first time in the history of astronomy

September 15, 2021
The Scitech
 

An international collaboration of astronomers has identified a curious occurrence of nine stars like objects that appeared and vanished in a small region within half an hour in an old photographic plate. Scientists from Sweden, Spain, USA, Ukraine, and India, including Dr. Alok C. Gupta, Scientist from ARIES, investigated early form of photography that used glass plates to capture images of the night sky from the 12th of April 1950, exposed at Palomar Observatory in California, USA and detected these transient stars which were not to be found in photographs half an hour later and not traced since then. Such a group of objects appearing and disappearing at the same time have been detected for the first time in the history of astronomy. The astronomers have not found any explanation in well-established astrophysical phenomena like gravitational lensing, fast radio bursts, or any variable star that could be responsible for this cluster of fast changes in the sky.