Exploring the cosmic X-ray background
Friday, September 12, 2014 - 07:40
in Astronomy & Space
You are likely familiar with the cosmic microwave background. This background is a thermal remnant of the big bang. Because of the expansion of the universe, this remnant energy has a temperature of about 2.7 K, which means it exists primarily in the microwave wavelengths. We see this cosmic background as a diffuse, low-energy glow of microwave radiation.