Original: In space fast comets and rockets fly, twinkle stars and black holes hungrily pull everything in. Planets go around the Sun and artificial satellites circle around exploring them.
Corrected: In space, fast comets and rockets fly; twinkling stars sparkle, and black holes pull everything in. Planets go around the Sun, and artificial satellites circle planets to help us learn about them.
Why we changed it:
- Added a comma after "In space" so the sentence starts clearly.
- Used a semicolon and "and" to join ideas more clearly; you could also split into two sentences.
- Changed "twinkle stars" to "twinkling stars" so the word describes the stars.
- Left out "hungrily" to keep the sentence simple; "pull everything in" says the same idea.
- Changed "circle around" to just "circle" because they mean the same thing and "circle" is shorter.
- Changed "exploring them" to "to help us learn about them" so it is clear who is learning.
Even simpler version: "In space, comets and rockets fly, stars twinkle, black holes pull things in, planets go around the Sun, and satellites help us learn about planets."