The increase in rocket launches by commercial space companies such as Elon Musk's SpaceX, Jeff Bezos' Blue Origin, and Richard Branson's Virgin Galactic "could have a significant cumulative effect on climate," the study said.

This is because of the amount of carbon gases and nitrogen oxides being produced with each launch, the study said.

The study found that the concentration of nitrogen oxides, which an ascending rocket releases into two cubic kilometers of atmospheric air, was considered "hazardous to human health" under the World Health Organization's (WHO) standards.