Changes

The companion star Mira B is a [[White dwarf]] and is thought to be accreting material from its neighbour, Mira A. Mira B completes one orbit around Mira A every 500&nbsp;years.<ref name=nasa>{{cite web|url=https://www.nasa.gov/mission_pages/galex/20070815/c.html|title=Mira Soars Through the Sky|accessdate=2018-12-27}}</ref>  

The companion star Mira B is a [[White dwarf]] and is thought to be accreting material from its neighbour, Mira A. Mira B completes one orbit around Mira A every 500&nbsp;years.<ref name=nasa>{{cite web|url=https://www.nasa.gov/mission_pages/galex/20070815/c.html|title=Mira Soars Through the Sky|accessdate=2018-12-27}}</ref>  

The system is though to be situated 350&nbsp;[[light year]]s from [[Earth]], though some sources suggest it is higher at 420&nbsp;ly.<ref name=britannica/><ref name=constellation-guide/> The system also appears to be racing round the [[Milky Way]] around 130&nsbp;km/s faster than other stars.<ref name=nasa/> [[Ultraviolet]] observations in 2006 by [[NASA]]'s Galaxy Evolution Explorer have shown Mira A is shedding vast quantities of material, which has formed a tail resembling that of a [[comet]].<ref name=nasa/>

The system is though to be situated 350&nbsp;[[light year]]s from [[Earth]], though some sources suggest it is higher at 420&nbsp;ly.<ref name=britannica/><ref name=constellation-guide/> The system also appears to be racing round the [[Milky Way]] around 130&nbsp;km/s faster than other stars.<ref name=nasa/> [[Ultraviolet]] observations in 2006 by [[NASA]]'s Galaxy Evolution Explorer have shown Mira A is shedding vast quantities of material, which has formed a tail resembling that of a [[comet]].<ref name=nasa/>

 

==References==

==References==