Only 20,000 light-years away in the constellation Sagittarius, M55 appears to earth-bound observers to be nearly 2/3 the size of the full moon.
Globular star clusters like M55 roam the halo of our Milky Way Galaxy as gravitationally bound populations of stars known to be much older than stellar groups found in the galactic disk.
Astronomers who make detailed studies of globular cluster stars can accurately measure the cluster ages and distances.
Their results ultimately constrain the age of the Universe (... it must be older than the stars in it! ), and provide a fundamental rung on the
also ich find, das bringts nid würkli. die chammer au uf de apod site go aluege. viellicht wenn mir denn nüm wüssed wo mir mit em speicherplatz ane sölled.
