In 2021, scientists reported that Earth dimmed by ~0.5% over two decades (1998–2017) as measured by earthshine using modern photometric techniques.
ɪn tˈuː θˈaʊzənd twˈɛnti wˈʌn, sˈaɪəntɪsts ɹᵻpˈoːɹɾᵻd ðæt ˈɜːθ dˈɪmd baɪ tˈɪldə zˈiəɹoʊ.fˈaɪv pɚsˈɛnt ˌoʊvɚ tˈuː dˈɛkeɪdz nˈaɪntiːnhˈʌndɹɪd nˈaɪnti ˈeɪt tˈuː θˈaʊzənd sˈɛvəntˌiːn æz mˈɛʒɚd baɪ ˈɜːθʃaɪn jˈuːzɪŋ mˈɑːdɚn fˌoʊɾoʊmˈɛtɹɪk tɛknˈiːks.