For small and far objects that cannot be resolved by telescopes, much of what we know comes from the study of their albedos.
fɔːɹ smˈɔːl ænd fˈɑːɹ ˈɑːbdʒɛkts ðæt kænˈɑːt biː ɹᵻzˈɑːlvd baɪ tˈɛlᵻskˌoʊps, mˈʌtʃ ʌv wʌt wiː nˈoʊ kˈʌmz fɹʌmðə stˈʌdi ʌv ðɛɹ ælbˈiːdoʊz.