Noun
solar corona (plural solar coronas)
(astronomy) The upper atmosphere of the sun, only visible during a total solar eclipse
Another problem with wave heating has been the complete absence, until the late 1990s, of any direct evidence of waves propagating through the solar corona. Source: Internet
Coronal seismology main Coronal seismology is a new way of studying the plasma of the solar corona with the use of magnetohydrodynamic (MHD) waves. Source: Internet
It is hypothesized that the reconnection and unravelling of braids can act as primary sources of heating of the active solar corona to temperatures of up to 4 million kelvin. Source: Internet
The Solar Maximum Mission subsequently acquired thousands of images of the solar corona before re-entering Earth's atmosphere in June 1989. Source: Internet
Local observations A picture of the solar corona taken with the LASCO C1 coronagraph. Source: Internet
Skylab made the first time-resolved observations of the solar transition region and of ultraviolet emissions from the solar corona. Source: Internet