Far better to send up a space ship equipped with a massive airbag that could be inflated to several kilometers (miles) wide and used to gently buffet the invading solar body away from a collision course with earth.

• 明智得多的办法是发射一艘配备有巨型安全气囊的宇宙飞船，气囊可以膨胀到数公里(英里)宽，用以驱使入侵的太阳系天体逐步偏离撞向地球的航向。