 <translate> Cosmic microwave background was not known at the time gravity was discovered. So, the answer is no. <yor> A ò tíì mọ ohun tó ń ṣẹlẹ̀ lábẹ́ ìmọ́lẹ̀ tó ń yí po ayé nígbà tí wọ́n ṣẹ̀ṣẹ̀ ṣàwárí agbára òòfà. Nítorí náà, ìdáhùn mi ni pé rárá. 