They can enter your blood stream (via breathing/ingesting) and once in your bloodstream they can enter cells and mutate your dna, which can cause cancer/birth defects/ reproductive harm
High-dose chemicals can damage DNA causing genotoxicity, which is defined as damage to DNA or genes. And this can be aggravated since many chemicals have had little toxicological evaluation.
Explanation:
The cancers are caused by mutations in the DNA throughout the life of a person, in such a way that obeying the causative factors, in this case the chemicals, they leave a mutational pattern in the genome of each tumor. There is an interesting biomarker called TGx-DDI, which is based on some genes that are expressed in a cell subjected to the stress produced by the chemical compound. These genes reflect the way in which different pathways can provide information on how cells respond to the chemical.
Landing on the moon takes years to figure out. (How, when, what is the purpose, etc.) Capturing an asteroid is beyond difficult and would also take years to figure out how to do so.
Launching a space probe has yet to be done BUT we have had a satellite launched (hence how we get satellite images.)
