What does it mean if dream about being in space?

This question is posted shortly after the U.S.A. successfully landed a robotic rover on Mars, so the news reports of the landing might have triggered this dream. But its meaning depends on the emotional tone of the dream. A dark frightening dream could express the dreamer's fear of being abandoned or lost, reflecting the vast emptiness of space. On the other hand, a happy, exciting dream might represent the dreamer's interest in science or hope for future adventures.