RT @ESAGaia: Image of the Week: #Gaia satellite and amateur astronomers spot one in a billion star cosmos.esa.int/web/gaia/iow_2… http://t.co/uWzPIFULsi
RT @ESAGaia: Image of the Week: #Gaia satellite and amateur astronomers spot one in a billion star cosmos.esa.int/web/gaia/iow_2… http://t.co/uWzPIFULsi