航天hángtiān 1.指人造卫星、宇宙飞船等在地球附近空间或太阳系空间飞行。{space flight; astronautic flight; flight of man-made satellite or spacecraft near the earth or within the solar system} 2.跟航天有关的{aerospace; of or related to the earth's atmosphere and space beyond}: ～技术{space technology; astronautical technology}|～事业。{astronautical undertakings}