Some of the prisoners were released to accompany Columbus. On 12th October 1492, Columbus spotted the land and called it Spain. The Tainos noticed it from behind the lush green trees. The Tainos believed as these white people with ships landed from heaven.
The ionosphere is that region of the upper atmosphere of a planet where charged particles (electrons and ions) of thermal energy are present, which are the result of ionization of the neutral atmospheric constituents by electromagnetic and corpuscular radiation.he termination of the ionosphere is then the indirect result of the solar wind interaction; e. g., in the case of Earth, represented by the boundary between solar-wind induced convective motions inside the magnetosphere and the co-rotating ionospheric plasma called the plasmapause.
The thermosphere is the second-highest layer of Earth's atmosphere. It extends from the mesopause (which separates it from the mesosphere) at an altitude of about 80 km (50 mi; 260,000 ft) up to the thermopause at an altitude range of 500â1000 km (310â620 mi; 1,600,000â3,300,000 ft). The ionosphere is a region of the atmosphere that is ionized by solar radiation. 2  It is responsible for auroras. 3  During daytime hours, it stretches from 50 to 1,000 km (31 to 621 mi; 160,000 to 3,280,000 ft) and includes the mesosphere, thermosphere, and parts of the exosphere.