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).
in the first year your newborn baby will on average gain 8 ounces in weight each month and have an average growth of around 1 4 to 1 2 inch a month from birth to the childs first birthday their weight will have tripled