In the center of our Galaxy, there is a huge double star, the source of light and life for this Galaxy, the Galactic Goddess, the Pleroma, the Galactic Central Sun.
A very bright, variable, double star in the constellation Aquila, approximately 15.7 light-years from Earth.
A double star in the constellation Gemini is the brightest star in the group, aproximately 46 light-years from Earth.
A double star in Auriga, the brightest star in the constellation, approximately46light - years from Earth.
Luckily for him, Westerlund 1 also contains a double star named W13.
Abstract: At present, the main means for time transfer are long or short wave, telephone, GPS, double star etc.
Notable too in skygazing lore Mizar, second star from the left in the dipper's handle, forms a vision-testing visual double star with apparently close Alcor.
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