New simulations led by CRA Prof. Tamara Bogdanovic and her student Forrest Kieffer support the ‘disappearance’ of ancient red giant stars from the Milky Way.
Link to their recent paper: http://adsabs.harvard.edu/abs/2016ApJ…823..155K
Press coverage in Daily Mail: http://www.dailymail.co.uk/sciencetech/article-6103187/Hubble-spots-gigantic-eye-sky-planetary-nebula.html