17 July 2019
New measurement deepens mystery of Universe’s expansion rate
... Earth (due to the relativistic effects of expanding space). By comparing the apparent brightnesses of the galaxies' red giant stars with nearby red giants, whose distances were measured with other methods, astronomers are able to determine how far...
September 2017
Binary stars and their extraordinary lives
... was ejected during the merger. Chandra X-ray Image of Mira (left pic) showing Mira A, a highly evolved red giant star, and Mira B, a white dwarf. Mira A is losing gas rapidly from its upper atmosphere via a stellar wind...
09 May 2016
Ancient silicate grains reveal histories of stardust in the Galaxy
... stardust from three major dust producers in the Galaxy: red giant stars, explosive supernovae, and novae,” said the leading author,... (one from a supernova and the other from a red giant star) and these were found to have evidence for radiation...
08 December 2015
New light shed on the mystery of 'Born Again' stars
...stand out because old stellar populations are expected to be devoid of blue highmass stars. Finding out why some stars that were expected to become red giants, stars like Aldebaran for example, but instead manifested as a blue straggler, is therefore...
