I don't know who's advising you on SEO, but you will not ever outrank STSCI, NASA, ESA, AWS Open Data's HSTS archive, The Planetary Society, the National Academy of Sciences, or the ESO on "hubble data" as long as Hubble is still what people think of when they hear Hubble. The telescope and related sites/agencies/organizations have a 22 year head start building a relevant link profile in Google. And if you did, Google would get suspicious.

Hubble is fine as a name if you pick the right keywords to target in your marketing, but "Hubble data" is never going to show a link to something that isn't at least tangentially related to the telescope.