うちゅうはいけいほうしゃ

Japanese

For pronunciation and definitions of うちゅうはいけいほうしゃ – see the following entry.
宇宙背景放射
[noun] (astronomy) cosmic background radiation
(This term, うちゅうはいけいほうしゃ (uchūhaikeihōsha), is the hiragana spelling of the above term.)