Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A 7<unk>12 biliyan shekaru, Barnard ta Star ne da yawa girmi da Sun, wanda shi ne 4.5 biliyan shekaru, kuma shi zai iya zama daga cikin tsofaffin taurari a cikin Milky Way galaxy. Tauraruwar Barnard ta rasa babban adadin makamashi na juyawa, kuma ƙananan canje-canje na lokaci-lokaci a cikin haskenta yana nuna cewa tana juyawa sau ɗaya a cikin kwanaki 130 (Rana tana juyawa a cikin 25). Ganin shekarunta, Barnard's Star ya dade yana zaton yana da kwanciyar hankali dangane da ayyukan taurari. A shekara ta 1998, 'yan taurari sun lura da wani tauraron tauraron tauraron, wanda ya nuna cewa Barnard's Star shine tauraron flare. Tauraruwar Barnard tana da sunan tauraron mai canzawa V2500 Ophiuchi. A shekara ta 2003, Barnard's Star ya gabatar da canji na farko da za'a iya ganowa a cikin saurin radial na tauraron da motsinsa ya haifar. Ƙarin canji a cikin saurin radial na Barnard's Star an danganta shi da aikin tauraronsa.  Tambaya: Menene Barnard's Star yake da shi?
sunan tauraron mai canzawa V2500