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).
Average Size Of Newborn. A 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.