After adding nasa.gov to /etc/hosts you won’t probably be able to access it through your browser, nonetheless you can install a web server and create a virtualhost for nasa.gov in your own computer!
Baada ya kuongeza nasa.gov kwa majeshi / nk / huwezi pengine kuwa na uwezo wa kupata huduma hiyo kupitia browser yako, hata hivyo unaweza kufunga mtandao wa kompyuta na kujenga virtualhost kwa nasa.gov katika kompyuta yako mwenyewe!