«Death has a special property that other sources of stellar variability do not,» Kochanek says. (scientificamerican.com)
The OGLE survey is used to study stellar variability including Cepheids but also caused by the warping of space - time as predicted by Einstein. (proftimobrien.com)
Considering the actual spot covering fraction range that typical stellar variability amplitude really translates to, a much broader range of stellar contamination is possible than previously considered. (distantearths.com)