Both are sort of correct - I suspect the lecturer wanted to make an amusing point.saberjim said:1. The average temperature of the cosmos is about 3 degrees K.
2. Most of the material in the cosmos is in the form of plasma which is extremely hot.
The temperature of the cosmos is not uniform and varies depending on the location and size of the object being measured. However, the average temperature of the observable universe is about 2.73 Kelvin (K), or approximately -270 degrees Celsius.
The temperature of the cosmos is measured using various methods, including observations of electromagnetic radiation emitted by objects in the universe, such as stars and galaxies. Scientists also use advanced telescopes and satellites to gather data on the cosmic microwave background radiation, which is a remnant of the Big Bang and can provide insight into the temperature of the universe.
No, the temperature of the cosmos is not constant. It has been changing since the beginning of the universe due to various factors, such as the expansion of the universe and the formation of stars and galaxies. However, the overall average temperature has remained relatively stable over time.
As the universe expands, the temperature of the cosmos decreases. This is because the expansion causes the energy of photons to decrease, resulting in a decrease in temperature. This relationship is known as the cosmological redshift, and it is one of the pieces of evidence supporting the Big Bang theory.
No, the temperature of the cosmos is not influenced by human activities. It is a natural phenomenon that is constantly changing and is not affected by human actions. However, our understanding and measurement of the temperature of the cosmos can be improved through scientific advancements and research.