'Baby ' Supernova Discovered
This image provided by NASA Wednesday May 14, 2008 shows a composite image of the supernova remnant G1.9+0.3 taken by NASA's Chandra X-ray Observatory. The image obtained in early 2007 is shown in orange and the radio image from NRAO's Very Large Array (VLA) from 1985 is in blue. The difference in size between the two images gives clear evidence for expansion, allowing the time since the original supernova explosion (about 140 years) to be estimated. his makes the original explosion the most recent supernova in the Galaxy, as measured in Earth's time-frame (referring to when events are observable at Earth). Equivalently, this is the youngest known supernova remnant in the Galaxy (140 years old), easily beating the previous record of about 330 years for Cassiopeia A. The rapid expansion and young age for G1.9+0.3 was recently confirmed by a new VLA image obtained in early 2008.
The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.