| 1. | We could first create a " sock " in the curvature of space , fold gently the space outside the sock in hyperspace , tear holes in the toe of the sock and in the space just below it , and finally " sew " the holes together to form a wormhole
天鹅座x - 1便是最早发现的怀疑黑洞。这物体的伴星是一颗o型星，质量下限是七个太阳质量，并会放射出x射线。一切证据都显示它极有可能是黑洞。 |
