Star Gamma Cassiopeiae & The Ghost Nebula (ground-based wide view)
This image shows the sky around the nebula IC 63, nicknamed the Ghost Nebula. It was created from images forming part of the Digitized Sky Survey 2. The field of view is dominated by the bright star Gamma Cassiopeiae, which is having a profound influence on IC 63. IC 63 is only one of several nebulous structures surrounding Gamma Cassiopeiae—all of which are affected by the radiation emitted by the blue-white subgiant star. Gamma Cassiopeiae is a variable star, and a multiple star system.
Based upon parallax measurements made by Europe's Hipparcos scientific satellite, Gamma Cassiopeiae is located at a distance of roughly 550 light-years from Earth. Together with its common-proper-motion companion, HD 5408, the system could contain a total of eight stars. Gamma Cassiopeiae has a mass 17 times that of the Sun. The star’s estimated age is only 8 million years.
Credit: European Space Agency/Hubble, NASA, Digitized Sky Survey 2
Acknowledgement: Davide de Martin
Release Date: October 25, 2018
#NASA #ESA #Astronomy #Space #Hubble #Star #GammaCassiopeiae #Navi #ReflectionNebula #EmissionNebula #IC63 #GhostNebula #Cassiopeia #Constellation #Cosmos #Universe #SpaceTelescope #GSFC #STScI #UnitedStates #Europe #STEM #Education
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