Question

clue: people who study stars and outer space

1. a o s x l n n e p

clue: growth; getting bigger

Explanation:

The first clue refers to astronomers who study stars and outer - space. From the given letters, we can form the word "astron" which is related to astronomy. The second clue "growth; getting bigger" can lead to the word "expansion" but there is no clear way to form it from the given letters. Focusing on the first clue, the relevant word from the letters is "astron".

Answer:

astron