My hobby is basketball and tabble tennis.

My favorite subject is astronomy and archaeology. I want to become an astronomer and archaeologist.

Frankly, I want to go to NASA because NASA is best of world astronautics and space administration station.

stars are very mysterious but beautiful.

When I look at the stars, my heart is in peace.

But nowadays we cannot see many stars because of the pollution.

Thank you in advance
My hobby is basketball and tabble tennis. more than one hobby so you need the plural - 'hobbies are' . Check spelling 'tabble'
My favorite subject is astronomy and archaeology. plural?I want to become an astronomer and archaeologist. seems an unlikely combination, did you mean 'or' instead of 'and'

Frankly, I want to go to NASA because NASA is best of take out the 'of' world astronautics and space administration station.

stars are very mysterious but beautiful. capital letter S at start of sentence. Again, do you mean 'and' rather than 'but'.

When I look at the stars, my heart is in peace. ok

But nowadays we cannot see many stars because of the pollution. ok, but better if it was part of the previous sentence
Thank you for your valuable tips!!!!!!

Emotion: smile