Rare, all-red auroras are produced by high-altitude oxygen, at heights of up to 200 miles. Nitrogen produces blue or purplish-red aurora. The connection between the Northern Lights and sunspot activity has been suspected since about 1880.
In developed countries, the average birth weight of a full-term newborn is approximately 3.4 kg (71â2 lb), and is typically in the range of 2.7â4.6 kg (6.0â10.1 lb).
The Average Size of Newborns. On the average, the overall length of a newbornâs body is 14 inches to 20 inches or 35.6 centimeters to 50.8 centimeters.In terms of the average weight, a full-term newborn usually measures 7.5 pounds or 3.2 kilograms.However, newborns may still weigh somewhere between 5.5 pounds and 10 pounds or 2.7 kilograms and 4.6 kilograms. Premature babies can even be smaller. newborn can also be called a baby or infant, which are terms used to address the offspring of human beings. The word ânewbornâ can be used appropriately on babies belonging to the age range of 1 month to 12 months. However, other people also use this term loosely to describe children up to 3 years old.