The objects inhabiting our universe range from the very familiar area of the earth and its moon to the strange pulsars, neutron stars, and black holes on the fringes of our perception. 银河系的星体繁多，包括人们非常熟悉的地球及其卫星，以及陌生的脉冲星、中子星，直至我们理解为边缘上的黑洞。()