1, "Space hero, win glory for our country". This sentence expresses gratitude and praise for the important contribution made by the troops in the aerospace industry, and also reflects the spirit and strength of the troops.

2. "Serving the country by space, building a dream for space flight" is a slogan full of passion and dreams, which expresses the firm belief and lofty pursuit of astronauts who love the motherland and devote themselves to the space cause.