most likely only the launchpad https://en.wikipedia.org/wiki/Omelek_Island

aeroway=spaceport

Which parameters for museum and subject ?

"showcasing information about the Solar System, cosmology, and spaceflight" as of https://en.wikipedia.org/wiki/Hong_Kong_Space_Museum

https://taginfo.openstreetmap.org/search?q=spaceflight#values
https://taginfo.openstreetmap.org/search?q=astronomy#values
https://taginfo.openstreetmap.org/search?q=aerospace#values

Probably multiple ? osm.wiki/Semi-colon_value_separator
"space" may be misinterpreted https://taginfo.openstreetmap.org/search?q=space#values
"science" values should correlate with "faculty" https://taginfo.openstreetmap.org/keys/faculty#values

Wurde nie "ausdiskutiert" osm.wiki/Proposal:Model_Aerodrome, es gäbe aber einen neuen Namensraum : osm.wiki/DE:Key:aeroway#Modelle

This should be an area with a 55km diameter node/2085932144

Wurde nie "ausdiskutiert" osm.wiki/Proposal:Model_Aerodrome, es gäbe aber einen neuen Namensraum : osm.wiki/DE:Key:aeroway#Modelle

645 Harrison Street according to https://www.planet.com/contact ?

"PFRR is owned by the University of Alaska Fairbanks (UAF) Geophysical Institute" https://en.wikipedia.org/wiki/Poker_Flat_Research_Range, so it's NOT "military"

Should be an area ?

probably a launchpad ? aeroway=spaceport

Which kind of crater ? node/357349420/history, see natural=crater