universetoday.com
Closer to the Heart - 47 Tucanae - Universe Today
Those huge, gravitationally bound balls of stars know as globular clusters aren’t without a heart. Containing a thick concentration of 10,000 to more than a million stars in a region spanning just 10 to 30 light-years, globular clusters are more akin to seething masses of suns where the lightweights head for the outer edges while … Continue reading "Closer to the Heart – 47 Tucanae"