ocr: SUN-EARTH CONNECTION In general, the geomagnetic storms and increased solar ultraviolet emission heat the Earth's upper atmosphere, causing it to expand. The heated air rises, and the density at the orbit of satellites up to about 1000 km increases signiticantly. This results in increased drag on satellites in space, causing them to slow and change or bit. Some satellites have experienced a drop up to 5 km during a geomagnetic storm. Naturally the space sta- tions need boosting, foo. The first US space station, Skylab burned in the at- mosphere in 1979, affer having been unmanned for five year ...