2007-08-30 11:43:20 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
I'd say, visible light (that portion of the electromagnetic spectrum of radiation we call visible light).
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2007-08-30 12:14:17 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋
To be more specific, much has been learned from microwave radiation, particularly the CMB (cosmic microwave background) radiation. It's distribution and mean temperature have helped to support the Big Bang theory.
2007-08-30 19:18:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
electromagnetic radiation, traditionally the portion called visible light. However since WWII astronomers have also used the radio portion of the spectrum,x-rays, ultraviolet and the infrared.
2007-08-30 19:11:50 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Cosmic radiation.
2007-08-30 18:47:38 · answer #4 · answered by kwilfort 7 · 0⤊ 0⤋
electromagnet radiation
2007-09-03 18:02:03 · answer #5 · answered by Anonymous · 0⤊ 0⤋
electromagnetic radiation
2007-08-30 19:20:36 · answer #6 · answered by rosie recipe 7 · 0⤊ 0⤋
electromagnectic radiation.
2007-08-30 18:51:36 · answer #7 · answered by bravozulu 7 · 1⤊ 0⤋