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Cosmic Microwave Background radiation maintains universe temperature
In the free interstellar space away from stars, the universe maintains a base temperature of approximately minus 270.4 degrees Celsius (about 2.725 Kelvin). This temperature sits just above absolute zero, which is defined as 0 Kelvin or minus 273.15 degrees Celsius.
This thermal state is maintained by the cosmic microwave background radiation, a relic from the early universe. This electromagnetic residual radiation formed roughly 380,000 years after the Big Bang, approximately 13.8 billion years ago, when the universe cooled sufficiently for the first neutral atoms to form and light to travel freely. Due to cosmic expansion over billions of years, these light waves have cooled to the current background temperature, which uniformly fills space and keeps objects in deep space at around minus 270 degrees Celsius.
Entities
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 3 SOURCES] Cosmic microwave background radiation is a relic from the early universe. www.fehmarn24.de · www.kreiszeitung.de · www.merkur.de
- [● 3 SOURCES] The Big Bang occurred approximately 13.8 billion years ago. www.fehmarn24.de · www.kreiszeitung.de · www.merkur.de
- [● 3 SOURCES] Absolute zero is 0 Kelvin or minus 273.15 degrees Celsius. www.fehmarn24.de · www.kreiszeitung.de · www.merkur.de
- [● 3 SOURCES] Neutral atoms formed roughly 380,000 years after the Big Bang. www.fehmarn24.de · www.kreiszeitung.de · www.merkur.de
- [● 3 SOURCES] The base temperature of free interstellar space is approximately minus 270.4 degrees Celsius. www.fehmarn24.de · www.kreiszeitung.de · www.merkur.de