Is space research worthwhile in spite of extremely expensive? *I practiced writing a short essay in English. Please correct me where I am wrong and tell me why it is wrong.

I do not think that space research is worthwhile because we should spend such money using for the earth, and it would be bad for the environment.

Some people may say that space research is worthwhile because it may be useful for us in the future; if we find a new place in which we can live in the space, we could live there like the earth. However, we shoud search for not space but the earth. For example, if we spend such money cleaning water, planting trees or building something living for poor people, our living would be happier than ever before.

On the contrary, space research is bad for the environment. When rockets lounch for space, a lot of gas will be emitted. Even if we succeed in launching rockets, it may become the space-trash.

Because of those reasons, I do not think it is worthwhile.